"Nobody must go upstairs," he instructed the butler. "When the doctor and the coroner's officer come, they must be admitted by the principal entrance, and if I am not here, you must understand that under no circumstances are those stairs leading to the portico to be used."

He himself went out of the main entrance to make a tour of the grounds. He had little hope that that search would lead to anything. Clues there might be in plenty when the daylight revealed them, but the likelihood of the murderer remaining in the vicinity of the scene of his crime was a remote one.

The grounds were extensive and well-wooded. Numerous winding paths met, and forked aimlessly, radiating out from the broad gravel paths about the house to the high walls which encircled the little estate.

In one corner of the grounds was a fairly large patch, innocent of bush and offering no cover at all. He made a casual survey of this, sweeping his light across the ordered rows of growing vegetables, and was going away when he saw a black bulk which had the appearance, even in the darkness, of a gardener's house. He swept this possible cover with his lamp.

Was his imagination playing him a trick, or had he caught the briefest glimpse of a white face peering round the corner? He put on his light again. There was nothing visible. He walked to the building and round it. There was nobody in sight. He thought he saw a dark form under the shadow of the building moving towards the belt of pines which surrounded the house on the three sides. He put on his lamp again, but the light was not powerful enough to carry the distance required, and he went forward at a jog trot in the direction he had seen the figure disappear. He reached the pines and went softly. Every now and again he stopped, and once he could have sworn he heard the cracking of a twig ahead of him.

He started off at a run in pursuit, and now there was no mistaking the fact that somebody was still in the wood. He heard the quick steps of his quarry and then there was silence. He ran on, but must have overshot the mark, for presently he heard a stealthy noise behind him. In a flash he turned back.

"Who are you?" he said. "Stand out or I'll fire!"

There was no answer and he waited. He heard the scraping of a boot against the brick-work and he knew that the intruder was climbing the wall. He turned in the direction of the sound, but again found nothing.

Then from somewhere above him came such a trill of demoniacal laughter as chilled his blood. The top of the wall was concealed by the overhanging branch of a tree and his light was valueless.

"Come down," he shouted, "I've got you covered!"

Again came that terrible laugh, half-fear, half-derision, and a voice shrill and harsh came down to him.

"Murderer! Murderer! You killed Thornton Lyne, damn you! I've kept this for you—take it!"

Something came crashing through the trees, something small and round, a splashing drop, as of water, fell on the back of Tarling's hand and he shook it off with a cry, for it burnt like fire. He heard the mysterious stranger drop from the coping of the wall and the sound of his swift feet. He stooped and picked up the article which had been thrown at him. It was a small bottle bearing a stained chemist's label and the word "Vitriol."



CHAPTER XXVIII

THE THUMB-PRINT

It was ten o'clock in the morning, and Whiteside and Tarling were sitting on a sofa in their shirt-sleeves, sipping their coffee. Tarling was haggard and weary, in contrast to the dapper inspector of police. Though the latter had been aroused from his bed in the early hours of the morning, he at least had enjoyed a good night's sleep.

They sat in the room in which Mrs. Rider had been murdered, and the rusty brown stains on the floor where Tarling had found her were eloquent of the tragedy.

They sat sipping their coffee, neither man talking, and they maintained this silence for several minutes, each man following his own train of thought. Tarling for reasons of his own had not revealed his own adventure and he had told the other nothing of the mysterious individual (who he was, he pretty well guessed) whom he had chased through the grounds.

Presently Whiteside lit a cigarette and threw the match in the grate, and Tarling roused himself from his reverie with a jerk.

"What do you make of it?" he asked.

Whiteside shook his head.

"If there had been property taken, it would have had a simple explanation. But nothing has gone. Poor girl!"

Tarling nodded.

"Terrible!" he said. "The doctor had to drug her before he could get her to go."

"Where is she?" asked Whiteside

"I sent her on an ambulance to a nursing-home in London," said Tarling shortly. "This is awful, Whiteside."

"It's pretty bad," said the detective-inspector, scratching his chin. "The young lady could supply no information?"

"Nothing, absolutely nothing. She had gone up to see her mother and had left the door ajar, intending to return by the same way after she had interviewed Mrs. Rider. As a matter of fact, she was let out by the front door. Somebody was watching and apparently thought that she was coming out by the way she went in, waited for a time, and then as she did not reappear, followed her into the building."

"And that somebody was Milburgh?" said Whiteside.

Tarling made no reply. He had his own views and for the moment was not prepared to argue.

"It was obviously Milburgh," said Whiteside. "He comes to you in the night—we know that he is in Hertford. We know, too, that he tried to assassinate you because he thought the girl had betrayed him and you had unearthed his secret. He must have killed his wife, who probably knows much more about the murder than the daughter."

Tarling looked at his watch.

"Ling Chu should be here by now," he said.

"Oh, you sent for Ling Chu, did you?" said Whiteside in surprise. "I thought that you'd given up that idea."

"I 'phoned again a couple of hours ago," said Tarling.

"H'm!" said Whiteside. "Do you think that he knows anything about this?"

Tarling shook his head.

"I believe the story he told me. Of course, when I made the report to Scotland Yard I did not expect that you people would be as credulous as I am, but I know the man. He has never lied to me."

"Murder is a pretty serious business," said Whiteside. "If a man didn't lie to save his neck, he wouldn't lie at all."

There was the sound of a motor below, and Tarling walked to the window.

"Here is Ling Chu," he said, and a few minutes later the Chinaman came noiselessly into the room.

Tarling greeted him with a curt nod, and without any preliminary told the story of the crime. He spoke in English—he had not employed Chinese since he discovered that Ling Chu understood English quite as well as he understood Cantonese, and Whiteside was able from time to time to interject a word, or correct some little slip on Tarling's part. The Chinaman listened without comment and when Tarling had finished he made one of his queer jerky bows and went out of the room.

"Here are the letters," said Whiteside, after the man had gone.

Two neat piles of letters were arranged on Mrs. Rider's desk, and Tarling drew up a chair.

"This is the lot?" he said.

"Yes," said Whiteside. "I've been searching the house since eight o'clock and I can find no others. Those on the right are all from Milburgh. You'll find they're simply signed with an initial—a characteristic of his—but they bear his town address."

"You've looked through them?" asked Tarling

"Read 'em all," replied the other. "There's nothing at all incriminating in any of them. They're what I would call bread and butter letters, dealing with little investments which Milburgh has made in his wife's name—or rather, in the name of Mrs. Rider. It's easy to see from these how deeply the poor woman was involved without her knowing that she was mixing herself up in a great conspiracy."

Tarling assented. One by one he took the letters from their envelopes, read them and replaced them. He was half-way through the pile when he stopped and carried a letter to the window.

"Listen to this," he said:

"Forgive the smudge, but I am in an awful hurry, and I have got my fingers inky through the overturning of an ink bottle."

"Nothing startling in that," said Whiteside with a smile.

"Nothing at all," admitted Tarling. "But it happens that our friend has left a very good and useful thumb-print. At least, it looks too big for a finger-print."

"Let me see it," said Whiteside, springing up.

He went to the other's side and looked over his shoulder at the letter in his hand, and whistled. He turned a glowing face upon Tarling and gripped his chief by the shoulder.

"We've got him!" he said exultantly. "We've got him as surely as if we had him in the pen!"

"What do you mean?" asked Tarling.

"I'll swear to that thumb-print," replied Whiteside. "It's identical with the blood mark which was left on Miss Rider's bureau on the night of the murder!"

"Are you sure?"

"Absolutely," said Whiteside, speaking quickly. "Do you see that whorl? Look at those lineations! They're the same. I have the original photograph in my pocket somewhere." He searched his pocket-book and brought out a photograph of a thumb-print considerably enlarged.

"Compare them!" cried Whiteside in triumph. "Line for line, ridge for ridge, and furrow for furrow, it is Milburgh's thumb-print and Milburgh is my man!"

He took up his coat and slipped it on.

"Where are you going?"

"Back to London," said Whiteside grimly, "to secure a warrant for the arrest of George Milburgh, the man who killed Thornton Lyne, the man who murdered his wife—the blackest villain at large in the world to-day!"



CHAPTER XXIX

THE THEORY OF LING CHU

Upon this scene came Ling Chu, imperturbable, expressionless, bringing with him his own atmosphere of mystery.

"Well," said Tarling, "what have you discovered?" and even Whiteside checked his enthusiasm to listen.

"Two people came up the stairs last night," said Ling Chu, "also the master." He looked at Tarling, and the latter nodded. "Your feet are clear," he said; "also the feet of the small-piece woman; also the naked feet."

"The naked feet?" said Tarling, and Ling Chu assented.

"What was the naked foot—man or woman?" asked Whiteside.

"It may have been man or woman," replied the Chinaman, "but the feet were cut and were bleeding. There is mark of blood on the gravel outside."

"Nonsense!" said Whiteside sharply.

"Let him go on," warned Tarling.

"A woman came in and went out——" continued Ling Chu.

"That was Miss Rider," said Tarling.

"Then a woman and a man came; then the bare-footed one came, because the blood is over the first women's footmarks."

"How do you know which was the first woman and which was the second?" asked Whiteside, interested in spite of himself.

"The first woman's foot was wet," said Ling Chu.

"But there had been no rain," said the detective in triumph.

"She was standing on the grass," said Ling Chu, and Tarling nodded his head, remembering that the girl had stood on the grass in the shadow of the bushes, watching his adventure with Milburgh.

"But there is one thing I do not understand master," said Ling Chu. "There is the mark of another woman's foot which I cannot find on the stair in the hall. This woman walked all round the house; I think she walked round twice; and then she walked into the garden and through the trees."

Tarling stared at him.

"Miss Rider came straight from the house on to the road," he said, "and into Hertford after me."

"There is the mark of a woman who has walked round the house," insisted Ling Chu, "and, therefore, I think it was a woman whose feet were bare."

"Are there any marks of a man beside us three?"

"I was coming to that," said Ling Chu. "There is a very faint trace of a man who came early, because the wet footsteps are over his; also he left, but there is no sign of him on the gravel, only the mark of a wheel-track."

"That was Milburgh," said Tarling.

"If a foot has not touched the ground," explained Ling Chu, "it would leave little trace. That is why the woman's foot about the house is so hard for me, for I cannot find it on the stair. Yet I know it came from the house because I can see it leading from the door. Come, master, I will show you."

He led the way down the stairs into the garden, and then for the first time Whiteside noticed that the Chinaman was bare-footed.

"You haven't mixed your own footmarks up with somebody else's?" he asked jocularly.

Ling Chu shook his head.

"I left my shoes outside the door because it is easier for me to work so," he said calmly, slipping his feet into his small shoes.

He led the way to the side of the house, and there pointed out the footprints. They were unmistakably feminine. Where the heel was, was a deep crescent-shaped hole, which recurred at intervals all round the house. Curiously enough, they were to be found in front of almost every window, as though the mysterious visitor had walked over the garden border as if seeking to find an entrance.

"They look more like slippers than shoes to me. They're undoubtedly a woman's," said Whiteside, examining one of the impressions. "What do you think, Tarling?"

Tarling nodded and led the way back to the room.

"What is your theory, Ling Chu?" he asked.

"Somebody came into the house," said the Chinaman, "squeezed through the door below and up the stairs. First that somebody killed and then went to search the house, but could not get through the door."

"That's right," said Whiteside. "You mean the door that shuts off this little wing from the rest of the house. That was locked, was it not, Tarling, when you made the discovery?"

"Yes," said Tarling, "it was locked."

"When they found they could not get into the house," Ling Chu went on, "they tried to get through one of the windows."

"They, they?" said Tarling impatiently. "Who are they? Do you mean the woman?"

The new theory was disturbing. He had pierced the second actor in the tragedy—a brown vitriol burn on the back of his hand reminded him of his existence—but who was the third?

"I mean the woman," replied Ling Chu quietly.

"But who in God's name wanted to get into the house after murdering Mrs. Rider?" asked Whiteside irritably. "Your theory is against all reason, Ling Chu. When a person has committed a murder they want to put as much distance between themselves and the scene of the crime as they can in the shortest possible space of time."

Ling Chu did not reply.

"How many people are concerned in this murder?" said Tarling. "A bare-footed man or woman came in and killed Mrs. Rider; a second person made the round of the house, trying to get in through one of the windows——"

"Whether it was one person or two I cannot tell," replied Ling Chu.

Tarling made a further inspection of the little wing. It was, as Ling Chu had said and as he had explained to the Chinaman, cut off from the rest of the house, and had evidently been arranged to give Mr. Milburgh the necessary privacy upon his visits to Hertford. The wing consisted of three rooms; a bedroom, leading from the sitting-room, evidently used by Mrs. Rider, for her clothes were hanging in the wardrobe; the sitting-room in which the murder was committed, and the spare room through which he had passed with Odette to the gallery over the hall.

It was through the door in this room that admission was secured to the house.

"There's nothing to be done but to leave the local police in charge and get back to London," said Tarling when the inspection was concluded.

"And arrest Milburgh," suggested Whiteside. "Do you accept Ling Chu's theory?"

Tarling shook his head.

"I am loath to reject it," he said, "because he is the most amazingly clever tracker. He can trace footmarks which are absolutely invisible to the eye, and he has a bushman's instinct which in the old days in China led to some extraordinary results."

They returned to town by car, Ling Chu riding beside the chauffeur, smoking an interminable chain of cigarettes. Tarling spoke very little during the journey, his mind being fully occupied with the latest development of a mystery, the solution of which still evaded him.

The route through London to Scotland Yard carried him through Cavendish Place, where the nursing home was situated in which Odette Rider lay. He stopped the car to make inquiries, and found that the girl had recovered from the frenzy of grief into which the terrible discovery of the morning had thrown her, and had fallen into a quiet sleep.

"That's good news, anyway," he said, rejoining his companion. "I was half beside myself with anxiety."

"You take a tremendous interest in Miss Rider, don't you?" asked Whiteside dryly.

Tarling brindled, then laughed.

"Oh, yes, I take an interest," he admitted, "but it is very natural."

"Why natural?" asked Whiteside.

"Because," replied Tarling deliberately, "Miss Rider is going to be my wife."

"Oh!" said Whiteside in blank amazement, and had nothing more to say.

The warrant for Milburgh's arrest was waiting for them, and placed in the hands of Whiteside for execution.

"We'll give him no time," said the officer. "I'm afraid he's had a little too much grace, and we shall be very lucky if we find him at home."

As he had suspected, the house in Camden Town was empty, and the woman who came daily to do the cleaning of the house was waiting patiently by the iron gate. Mr. Milburgh, she told them, usually admitted her at half-past eight. Even if he was "in the country" he was back at the house before her arrival.

Whiteside fitted a skeleton key into the lock of the gate, opened it (the charwoman protesting in the interests of her employer) and went up the flagged path. The door of the cottage was a more difficult proposition, being fitted with a patent lock. Tarling did not stand on ceremony, but smashed one of the windows, and grinned as he did so.

"Listen to that?"

The shrill tinkle of a bell came to their ears.

"Burglar alarm," said Tarling laconically, and pushed back the catch, threw up the window, and stepped into the little room where he had interviewed Mr. Milburgh.

The house was empty. They went from room to room, searching the bureaux and cupboards. In one of these Tarling made a discovery. It was no more than a few glittering specks which he swept from a shelf into the palm of his hand.

"If that isn't thermite, I'm a Dutchman," he said. "At any rate, we'll be able to convict Mr. Milburgh of arson if we can't get him for murder. We'll send this to the Government analyst right away, Whiteside. If Milburgh did not kill Thornton Lyne, he certainly burnt down the premises of Dashwood and Solomon to destroy the evidence of his theft."

It was Whiteside who made the second discovery. Mr. Milburgh slept on a large wooden four-poster.

"He's a luxurious devil," said Whiteside. "Look at the thickness of those box springs." He tapped the side of that piece of furniture and looked round with a startled expression.

"A bit solid for a box spring, isn't it?" he asked, and continued his investigation, tearing down the bed valance.

Presently he was rewarded by finding a small eyelet hole in the side of the mattress. He took out his knife, opened the pipe cleaner, and pressed the narrow blade into the aperture. There was a click and two doors, ludicrously like the doors which deaden the volume of gramophone music, flew open.

Whiteside put in his hand and pulled something out.

"Books," he said disappointedly. Then, brightening up. "They are diaries; I wonder if the beggar kept a diary?"

He piled the little volumes on the bed and Tarling took one and turned the leaves.

"Thornton Lyne's diary," he said. "This may be useful."

One of the volumes was locked. It was the newest of the books, and evidently an attempt had been made to force the lock, for the hasp was badly wrenched. Mr. Milburgh had, in fact, made such an attempt, but as he was engaged in a systematic study of the diaries from the beginning he had eventually put aside the last volume after an unsuccessful effort to break the fastening.

"Is there nothing else?" asked Tarling.

"Nothing," said the disappointed inspector, looking into the interior. "There may be other little cupboards of this kind," he added. But a long search revealed no further hiding-place.

"Nothing more is to be done here," said Tarling. "Keep one of your men in the house in case Milburgh turns up. Personally I doubt very much whether he will put in an appearance."

"Do you think the girl has frightened him?"

"I think it is extremely likely," said Tarling. "I will make an inquiry at the Stores, but I don't suppose he will be there either."

This surmise proved to be correct. Nobody at Lyne's Store had seen the manager or received word as to his whereabouts. Milburgh had disappeared as though the ground had opened and swallowed him.

No time was lost by Scotland Yard in communicating particulars of the wanted man to every police station in England. Within twenty-four hours his description and photograph were in the hands of every chief constable; and if he had not succeeded in leaving the country—which was unlikely—during the time between the issue of the warrant and his leaving Tarling's room in Hertford, his arrest was inevitable.

At five o'clock that afternoon came a new clue. A pair of ladies' shoes, mud-stained and worn, had been discovered in a ditch on the Hertford road, four miles from the house where the latest murder had been committed. This news came by telephone from the Chief of the Hertford Constabulary, with the further information that the shoes had been despatched to Scotland Yard by special messenger.

It was half-past seven when the little parcel was deposited on Tarling's table. He stripped the package of its paper, opened the lid of the cardboard box, and took out a distorted-looking slipper which had seen better days.

"A woman's, undoubtedly," he said. "Do you note the crescent-shaped heel."

"Look!" said Whiteside, pointing to some stains on the whitey-brown inner sock. "That supports Ling Chu's theory. The feet of the person who wore these were bleeding."

Tailing examined the slippers and nodded. He turned up the tongue in search of the maker's name, and the shoe dropped from his hand.

"What's on earth the matter?" asked Whiteside, and picked it up.

He looked and laughed helplessly; for on the inside of the tongue was a tiny label bearing the name of a London shoemaker, and beneath, written in ink, "Miss O. Rider."



CHAPTER XXX

WHO KILLED MRS. RIDER?

The matron of the nursing home received Tarling. Odette, she said, had regained her normal calm, but would require a few days' rest. She suggested she should be sent to the country.

"I hope you're not going to ask her a lot of questions, Mr. Tarling," said the matron, "because she really isn't fit to stand any further strain."

"There's only one question I'm going to ask," said Tarling grimly.

He found the girl in a prettily-furnished room, and she held out her hand to him in greeting. He stooped and kissed her, and without further ado produced the shoe from his pocket.

"Odette dear," he said gently, "is this yours?"

She looked at it and nodded.

"Why yes, where did you find it?"

"Are you sure it is yours?"

"I'm perfectly certain it's mine," she smiled. "It's an old slipper I used to wear. Why do you ask?"

"Where did you see it last?"

The girl closed her eyes and shivered.

"In mother's room," she said. "Oh, mother, mother!"

She turned her head to the cushion of the chair and wept, and Tarling soothed her.

It was some time before she was calm, but then she could give no further information.

"It was a shoe that mother liked because it fitted her. We both took the same size...."

Her voice broke again and Tarling hastened to change the conversation.

More and more he was becoming converted to Ling Chu's theory. He could not apply to that theory the facts which had come into his possession. On his way back from the nursing home to police headquarters, he reviewed the Hertford crime.

Somebody had come into the house bare-footed, with bleeding feet, and, having committed the murder, had looked about for shoes. The old slippers had been the only kind which the murderer could wear, and he or she had put them on and had gone out again, after making the circuit of the house. Why had this mysterious person tried to get into the house again, and for whom or what were they searching?

If Ling Chu was correct, obviously the murderer could not be Milburgh. If he could believe the evidence of his senses, the man with the small feet had been he who had shrieked defiance in the darkness and had hurled the vitriol at his feet. He put his views before his subordinate and found Whiteside willing to agree with him.

"But it does not follow," said Whiteside, "that the bare-footed person who was apparently in Mrs. Rider's house committed the murder. Milburgh did that right enough, don't worry! There is less doubt that he committed the Daffodil Murder."

Tarling swung round in his chair; he was sitting on the opposite side of the big table that the two men used in common.

"I think I know who committed the Daffodil Murder," he said steadily. "I have been working things out, and I have a theory which you would probably describe as fantastic."

"What is it?" asked Whiteside, but the other shook his head.

He was not for the moment prepared to reveal his theory.

Whiteside leaned back in his chair and for a moment cogitated.

"The case from the very beginning is full of contradictions," he said. "Thornton Lyne was a rich man—by-the-way, you're a rich man, now, Tarling, and I must treat you with respect."

Tarling smiled.

"Go on," he said.

"He had queer tastes—a bad poet, as is evidenced by his one slim volume of verse. He was a poseur, proof of which is to be found in his patronage of Sam Stay—who, by the way, has escaped from the lunatic asylum; I suppose you know that?"

"I know that," said Tarling. "Go on."

"Lyne falls in love with a pretty girl in his employ," continued Whiteside. "Used to having his way when he lifted his finger, all women that in earth do dwell must bow their necks to the yoke. He is repulsed by the girl and in his humiliation immediately conceives for her a hatred beyond the understanding of any sane mortal."

"So far your account doesn't challenge contradiction," said Tarling with a little twinkle in his eye.

"That is item number one," continued Whiteside, ticking the item off on his fingers. "Item number two is Mr. Milburgh, an oleaginous gentleman who has been robbing the firm for years and has been living in style in the country on his ill-earned gains. From what he hears, or knows, he gathers, that the jig is up. He is in despair when he realises that Thornton Lyne is desperately in love with his step-daughter. What is more likely than that he should use his step-daughter in order to influence Thornton Lyne to take the favourable view of his delinquencies?"

"Or what is more likely," interrupted Tarling, "than that he would put the blame for the robberies upon the girl and trust to her paying a price to Thornton Lyne to escape punishment?"

"Right again. I'll accept that possibility," said Whiteside. "Milburgh's plan is to get a private interview, under exceptionally favourable circumstances, with Thornton Lyne. He wires to that gentleman to meet him at Miss Rider's flat, relying upon the magic of the name."

"And Thornton Lyne comes in list slippers," said Tarling sarcastically. "That doesn't wash, Whiteside."

"No, it doesn't," admitted the other. "But I'm getting at the broad aspects of the case. Lyne comes. He is met by Milburgh, who plays his trump card of confession and endeavours to switch the young man on to the solution which Milburgh had prepared. Lyne refuses, there is a row, and is desperation Milburgh shoots Thornton Lyne."

Tarling shook his head. He mused a while, then:

"It's queer," he said.

The door opened and a police officer came in.

"Here are the particulars you want," he said and handed Whiteside a typewritten sheet of paper.

"What is this?" said Whiteside when the man had gone. "Oh, here is our old friend, Sam Stay. A police description." He read on: "Height five foot four, sallow complexion ... wearing a grey suit and underclothing bearing the markings of the County Asylum.... Hullo!"

"What is it?" said Tarling.

"This is remarkable," said Whiteside, and read

"When the patient escaped, he had bare feet. He takes a very small size in shoes, probably four or five. A kitchen knife is missing and the patient may be armed. Boot-makers should be warned...."

"Bare feet!" Tarling rose from the table with a frown on his face. "Sam Stay hated Odette Rider."

The two men exchanged glances.

"Now, do you see who killed Mrs. Rider?" asked Tarling. "She was killed by one who saw Odette Rider go into the house, and did not see her come out; who went in after her to avenge, as he thought, his dead patron. He killed this unhappy woman—the initials on the knife, M.C.A., stand for Middlesex County Asylum, and he brought the knife with him—and discovered his mistake; then, having searched for a pair of shoes to cover his bleeding feet, and having failed to get into the house by any other way, made a circuit of the building, looking for Odette Rider and seeking an entrance at every window."

Whiteside looked at him in astonishment.

"It's a pity you've got money," he said admiringly. "When you retire from this business there'll be a great detective lost."



CHAPTER XXXI

SAM STAY TURNS UP

"I have seen you somewhere before, ain't I?"

The stout clergyman in the immaculate white collar beamed benevolently at the questioner and shook his head with a gentle smile.

"No, my dear friend, I do not think I have ever seen you before."

It was a little man, shabbily dressed, and looking ill. His face was drawn and lined; he had not shaved for days, and the thin, black stubble of hair gave him a sinister look. The clergyman had just walked out of Temple Gardens and was at the end of Villiers Street leading up to the Strand, when he was accosted. He was a happy-looking clergyman, and something of a student, too, if the stout and serious volume under his arm had any significance.

"I've seen you before," said the little man, "I've dreamt about you."

"If you'll excuse me," said the clergyman, "I am afraid I cannot stay. I have an important engagement."

"Hold hard," said the little man, in so fierce a tone that the other stopped. "I tell you I've dreamt about you. I've seen you dancing with four black devils with no clothes on, and you were all fat and ugly."

He lowered his voice and was speaking in a fierce earnest monotone, as though he was reciting some lesson he had been taught.

The clergyman took a pace back in alarm.

"Now, my good man," he said severely, "you ought not to stop gentlemen in the street and talk that kind of nonsense. I have never met you before in my life. My name is the Reverend Josiah Jennings."

"Your name is Milburgh," said the other. "Yes, that's it, Milburgh. He used to talk about you! That lovely man—here!" He clutched the clergyman's sleeve and Milburgh's face went a shade paler. There was a concentrated fury in the grip on his arm and a strange wildness in the man's speech. "Do you know where he is? In a beautivault built like an 'ouse in Highgate Cemetery. There's two little doors that open like the door of a church, and you go down some steps to it."

"Who are you?" asked Milburgh, his teeth chattering.

"Don't you know me?" The little man peered at him. "You've heard him talk about me. Sam Stay—why, I worked for two days in your Stores, I did. And you—you've only got what he's given you. Every penny you earned he gave you, did Mr. Lyne. He was a friend to everybody—to the poor, even to a hook like me."

His eyes filled with tears and Mr. Milburgh looked round to see if he was being observed.

"Now, don't talk nonsense!" he said under his breath, "and listen, my man; if anybody asks you whether you have seen Mr. Milburgh, you haven't, you understand?"

"Oh, I understand," said the man. "But I knew you! There's nobody connected with him that I don't remember. He lifted me up out of the gutter, he did. He's my idea of God!"

They had reached a quiet corner of the Gardens and Milburgh motioned the man to sit beside him on a garden seat.

For the first time that day he experienced a sense of confidence in the wisdom of his choice of disguise. The sight of a clergyman speaking with a seedy-looking man might excite comment, but not suspicion. After all, it was the business of clergymen to talk to seedy-looking men, and they might be seen engaged in the most earnest and confidential conversation and he would suffer no loss of caste.

Sam Stay looked at the black coat and the white collar in doubt.

"How long have you been a clergyman, Mr. Milburgh?" he asked.

"Oh—er—for a little while," said Mr. Milburgh glibly, trying to remember what he had heard about Sam Stay. But the little man saved him the labour of remembering.

"They took me away to a place in the country," he said, "but you know I wasn't mad, Mr. Milburgh. He wouldn't have had a fellow hanging round him who was mad, would he? You're a clergyman, eh?" He nodded his head wisely, then asked, with a sudden eagerness: "Did he make you a clergyman? He could do wonderful things, could Mr. Lyne, couldn't he? Did you preach over him when they buried him in that little vault in 'Ighgate? I've seen it—I go there every day, Mr. Milburgh," said Sam. "I only found it by accident. 'Also Thornton Lyne, his son.' There's two little doors that open like church doors."

Mr. Milburgh drew a long sigh. Of course, he remembered now. Sam Stay had been removed to a lunatic asylum, and he was dimly conscious of the fact that the man had escaped. It was not a pleasant experience, talking with an escaped lunatic. It might, however, be a profitable one. Mr. Milburgh was a man who let very few opportunities slip. What could he make out of this, he wondered? Again Sam Stay supplied the clue.

"I'm going to settle with that girl——" He stopped and closed his lips tightly, and looked with a cunning little smile at Milburgh. "I didn't say anything, did I?" he asked with a queer little chuckle. "I didn't say anything that would give me away, did I?"

"No, my friend," said Mr. Milburgh, still in the character of the benevolent pastor. "To what girl do you refer?"

The face of Sam Stay twisted into a malignant smile.

"There's only one girl," he said between his teeth, "and I'll get her. I'll settle with her! I've got something here——" he felt in his pocket in a vague, aimless way. "I thought I had it, I've carried it about so long; but I've got it somewhere, I know I have!"

"So you hate Miss Rider, do you?" asked Milburgh.

"Hate her!"

The little fellow almost shouted the words, his face purple, his eyes starting from his head, his two hands twisted convulsively.

"I thought I'd finished her last night," he began, and stopped.

The words had no significance for Mr. Milburgh, since he had seen no newspapers that day.

"Listen," Sam went on. "Have you ever loved anybody?"

Mr. Milburgh was silent. To him Odette Rider was nothing, but about the woman Odette Rider had called mother and the woman he called wife, circled the one precious sentiment in his life.

"Yes, I think I have," he said after a pause. "Why?"

"Well, you know how I feel, don't you?" said Sam Stay huskily. "You know how I want to get the better of this party who brought him down. She lured him on—lured him on—oh, my God!" He buried his face in his hands and swayed from side to side.

Mr. Milburgh looked round in some apprehension. No one was in sight.

Odette would be the principal witness against him and this man hated her. He had small cause for loving her. She was the one witness that the Crown could produce, now that he had destroyed the documentary evidence of his crime. What case would they have against him if they stood him in the dock at the Old Bailey, if Odette Rider were not forthcoming to testify against him?

He thought the matter over cold-bloodedly, as a merchant might consider some commercial proposition which is put before him. He had learnt that Odette Rider was in London in a nursing home, as the result of a set of curious circumstances.

He had called up Lyne's Store that morning on the telephone to discover whether there had been any inquiries for him and had heard from his chief assistant that a number of articles of clothing had been ordered to be sent to this address for Miss Rider's use. He had wondered what had caused her collapse, and concluded that it was the result of the strain to which the girl had been subjected in that remarkable interview which she and he had had with Tarling at Hertford on the night before.

"Suppose you met Miss Rider?" he said. "What could you do?"

Sam Stay showed his teeth in a grin.

"Well, anyway, you're not likely to meet her for some time. She is in a nursing home," said Milburgh, "and the nursing home," he went on deliberately, "is at 304, Cavendish Place."

"304, Cavendish Place," repeated Sam. "That's near Regent Street, isn't it?"

"I don't know where it is," said Mr. Milburgh. "She is at 304, Cavendish Place, so that it is very unlikely that you will meet her for some time."

He rose to his feet, and he saw the man was shaking from head to foot like a man in the grip of ague.

"304, Cavendish Place," he repeated, and without another word turned his back on Mr. Milburgh and slunk away.

That worthy gentleman looked after him and shook his head, and then rising, turned and walked in the other direction. It was just as easy to take a ticket for the Continent at Waterloo station as it was at Charing Cross. In many ways it was safer.



CHAPTER XXXII

THE DIARY OF THORNTON LYNE

Tarling should have been sleeping. Every bone and sinew in him ached for rest. His head was sunk over a table in his flat. Lyne's diaries stood in two piles on the table, the bigger pile that which he had read, the lesser being those which Tarling had yet to examine.

The diaries had been blank books containing no printed date lines. In some cases one book would cover a period of two or three years, in other cases three or four books would be taken up by the record of a few months. The pile on the left grew, and the pile on the right became smaller, until there was only one book—a diary newer than the others which had been fastened by two brass locks, but had been opened by the Scotland Yard experts.

Tarling took up this volume and turned the leaves. As he had expected, it was the current diary—that on which Thornton Lyne had been engaged at the time of his murder. Tarling opened the book in a spirit of disappointment. The earlier books had yielded nothing save a revelation of the writer's egotism. He had read Lyne's account of the happenings in Shanghai, but after all that was nothing fresh, and added little to the sum of the detective's knowledge.

He did not anticipate that the last volume would yield any more promising return for his study. Nevertheless, he read it carefully, and presently drawing a writing pad toward him, he began to note down excerpts from the diary. There was the story, told in temperate language and with surprising mildness, of Odette Rider's rejection of Thornton Lyne's advances. It was a curiously uninteresting record, until he came to a date following the release of Sam Stay from gaol, and here Thornton Lyne enlarged upon the subject of his "humiliation."

"Stay is out of prison," the entry ran. "It is pathetic to see how this man adores me. I almost wish sometimes that I could keep him out of gaol; but if I did so, and converted him into a dull, respectable person, I should miss these delicious experiences which his worship affords. It is good to bask in the bright sunlight of his adoration! I talked to him of Odette. A strange matter to discuss with a lout, but he was so wonderful a listener! I exaggerated, the temptation was great. How he loathed her by the time I was through ... he actually put forward a plan to 'spoil her looks,' as he put it. He had been working in the same prison gang as a man who was undergoing a term of penal servitude for 'doing in' his girl that way ... vitriol was used, and Sam suggested that he should do the work.... I was horrified, but it gave me an idea. He says he can give me a key that will open any door. Suppose I went ... in the dark? And I could leave a clue behind. What clue? Here is a thought. Suppose I left something unmistakably Chinese? Tarling had evidently been friendly with the girl ... something Chinese might place him under suspicion...."

The diary ended with the word "suspicion," an appropriate ending. Tarling read the passages again and again until he almost had them by heart. Then he closed the book and locked it away in his drawer.

He sat with his chin on his hand for half an hour. He was piecing together the puzzle which Thornton Lyne had made so much more simple. The mystery was clearing up. Thornton Lyne had gone to that flat not in response to the telegram, but with the object of compromising and possibly ruining the girl. He had gone with the little slip of paper inscribed with Chinese characters, intending to leave the Hong in a conspicuous place, that somebody else might be blamed for his infamy.

Milburgh had been in the flat for another purpose. The two men had met; there had been a quarrel; and Milburgh had fired the fatal shot. That part of the story solved the mystery of Thornton Lyne's list slippers and his Chinese characters; his very presence there was cleared up. He thought of Sam Stay's offer.

It came in a flash to Tarling that the man who had thrown the bottle of vitriol at him, who had said he had kept it for years—was Sam Stay. Stay, with his scheme for blasting the woman who, he believed, had humiliated his beloved patron.

And now for Milburgh, the last link in the chain.

Tarling had arranged for the superintendent in charge of the Cannon Row Police Station to notify him if any news came through. The inspector's message did not arrive, and Tarling went down through Whitehall to hear the latest intelligence at first hand. That was to be precious little. As he was talking there arrived on the scene an agitated driver, the proprietor of a taxicab which had been lost. An ordinary case such as come the way of the London police almost every day. The cabman had taken a man and a woman to one of the West End theatres, and had been engaged to wait during the evening and pick them up when the performance was through. After setting down his fares, he had gone to a small eating-house for a bit of supper. When he came out the cab had disappeared.

"I know who done it," he said vehemently, "and if I had him here, I'd...."

"How do you know?"

"He looked in at the coffee-shop while I was eating my bit of food."

"What did he look like?" asked the station inspector.

"He was a man with a white face," said the victim, "I could pick him out of a thousand. And what's more, he had a brand-new pair of boots on."

Tarling had strolled away from the officer's desk whilst this conversation was in progress, but now he returned.

"Did he speak at all?" he asked.

"Yes, sir," said the cabman. "I happened to ask him if he was looking for anybody, and he said no, and then went on to talk a lot of rubbish about a man who had been the best friend any poor chap could have had. My seat happened to be nearest the door, that's how I got into conversation with him. I thought he was off his nut."

"Yes, yes, go on," said Tarling impatiently. "What happened then?"

"Well, he went out," said the cabman, "and presently I heard a cab being cranked up. I thought it was one of the other drivers—there were several cabs outside. The eating-house is a place which cabmen use, and I didn't take very much notice until I came out and found my cab gone and the old devil I'd left in charge in a public-house drinking beer with the money this fellow had given him."

"Sounds like your man, sir," said the inspector, looking at Tarling.

"That's Sam Stay all right," he said, "but it's news to me that he could drive a taxi."

The inspector nodded.

"Oh, I know Sam Stay all right, sir. We've had him in here two or three times. He used to be a taxi-driver—didn't you know that?"

Tarling did not know that. He had intended looking up Sam's record that day, but something had occurred to put the matter out of his mind.

"Well, he can't go far," he said. "You'll circulate the description of the cab, I suppose? He may be easier to find. He can't hide the cab as well as he can hide himself, and if he imagines that the possession of a car is going to help him to escape he's making a mistake."

Tarling was going back to Hertford that night, and had informed Ling Chu of his intention. He left Cannon Row Police Station, walked across the road to Scotland Yard, to confer with Whiteside, who had promised to meet him. He was pursuing independent inquiries and collecting details of evidence regarding the Hertford crime.

Whiteside was not in when Tarling called, and the sergeant on duty in the little office by the main door hurried forward.

"This came for you two hours ago, sir," he said "We thought you were in Hertford."

"This" was a letter addressed in pencil, and Mr. Milburgh had made no attempt to disguise his handwriting. Tarling tore open the envelope and read the contents:

"Dear Mr. Tarling," it began. "I have just read in the Evening Press, with the deepest sorrow and despair, the news that my dearly Beloved wife, Catherine Rider, has been foully murdered. How terrible to think that a few hours ago I was conversing with her assassin, as I believe Sam Stay to be, and had inadvertently given him information as to where Miss Rider was to be found! I beg of you that you will lose no time in saving her from the hands of this cruel madman, who seems to have only one idea, and that to avenge the death of the late Mr. Thornton Lyne. When this reaches you I shall be beyond the power of human vengeance, for I have determined to end a life which has held so much sorrow and disappointment.—M."

He was satisfied that Mr. Milburgh would not commit suicide, and the information was superfluous that Sam Stay had murdered Mrs. Rider. It was the knowledge that this vengeful lunatic knew where Odette Rider was staying which made Tarling sweat.

"Where is Mr. Whiteside?" he asked.

"He has gone to Cambours Restaurant to meet somebody, sir," said the sergeant.

The somebody was one of Milburgh's satellites at Lyne's Store. Tarling must see him without delay. The inspector had control of all the official arrangements connected with the case, and it would be necessary to consult him before he could place detectives to watch the nursing home in Cavendish Place.

He found a cab and drove to Cambours, which was in Soho, and was fortunate enough to discover Whiteside in the act of leaving.

"I didn't get much from that fellow," Whiteside began, when Tarling handed him the letter.

The Scotland Yard man read it through without comment and handed it back.

"Of course he hasn't committed suicide. It's the last thing in the world that men of the Milburgh type ever think about seriously. He is a cold-blooded villain. Imagine him sitting down to write calmly about his wife's murderer!"

"What do you think of the other matter—the threat against Odette?"

Whiteside nodded.

"There may be something in it," he said. "Certainly we cannot take risks. Has anything been heard of Stay?"

Tarling told the story of the stolen taxicab.

"We'll have him," said Whiteside confidently. "He'll have no pals, and without pals in the motor business it is practically impossible to get a car away."

He got into Tarling's cab, and a few minutes later they were at the nursing home.

The matron came to them, a sedate, motherly lady.

"I'm sorry to disturb you at this hour of the night," said Tarling, sensing her disapproval. "But information has come to me this evening which renders it necessary that Miss Rider should be guarded."

"Guarded?" said the matron in surprise. "I don't quite understand you, Mr. Tarling. I had come down to give you rather a blowing up about Miss Rider. You know she is absolutely unfit to go out. I thought I made that clear to you when you were here this morning?"

"Go out?" said the puzzled Tarling. "What do you mean? She is not going out."

It was the matron's turn to be surprised.

"But you sent for her half an hour ago," she said.

"I sent for her?" said Tarling, turning pale. "Tell me, please, what has happened?"

"About half an hour ago, or it may be a little longer," said the matron, "a cabman came to the door and told me that he had been sent by the authorities to fetch Miss Rider at once—she was wanted in connection with her mother's murder."

Something in Tarling's face betrayed his emotion.

"Did you not send for her?" she asked in alarm.

Tarling shook his head.

"What was the man like who called?" he asked:

"A very ordinary-looking man, rather under-sized and ill-looking—it was the taxi-driver."

"You have no idea which way they went?"

"No," replied the matron. "I very much objected to Miss Rider going at all, but when I gave her the message, which apparently had come from you, she insisted upon going."

Tarling groaned. Odette Rider was in the power of a maniac who hated her, who had killed her mother and had cherished a plan for disfiguring the beauty of the girl whom he believed had betrayed his beloved master.

Without any further words he turned and left the waiting-room, followed by Whiteside.

"It's hopeless," he said, when they were outside, "hopeless, hopeless! My God! How terrible! I dare not think of it. If Milburgh is alive he shall suffer."

He gave directions to the cab-driver and followed Whiteside into the cab.

"I'm going back to my flat to pick up Ling Chu," he said. "I can't afford to lose any help he may be able to give us."

Whiteside was pardonably piqued.

"I don't know if your Ling Chu will be able to do very much in the way of trailing a taxicab through London." And then, recognising something of the other's distress, he said more gently, "Though I agree with you that every help we can get we shall need."

On their arrival at the Bond Street flat, Tarling opened the door and went upstairs, followed by the other. The flat was in darkness—an extraordinary circumstance, for it was an understood thing that Ling Chu should not leave the house whilst his master was out. And Ling Chu had undoubtedly left. The dining-room was empty. The first thing Tarling saw, when he turned on the light, was a strip of rice paper on which the ink was scarcely dry. Just half a dozen Chinese characters and no more.

"If you return before I, learn that I go to find the little-little woman," read Tarling in astonishment.

"Then he knows she's gone! Thank God for that!" he said. "I wonder——"

He stopped. He thought he had heard a low moan, and catching the eye of Whiteside, he saw that the Scotland Yard man had detected the same sound.

"Sounds like somebody groaning," he said. "Listen!"

He bent his head and waited, and presently it came again.

In two strides Tarling was at the door of Ling Chu's sleeping place, but it was locked. He stooped to the key-hole and listened, and again heard the moan. With a thrust of his shoulder he had broken the door open and dashed in.

The sight that met his eyes was a remarkable one. There was a man lying on the bed, stripped to the waist. His hands and his legs were bound and a white cloth covered his face. But what Tarling saw before all else was that across the centre of the broad chest were four little red lines, which Tarling recognised. They were "persuaders," by which native Chinese policemen secretly extract confessions from unwilling criminals—light cuts with a sharp knife on the surface of the skin, and after——

He looked around for the "torture bottle," but it was not in sight.

"Who is this?" he asked, and lifted the cloth from the man's face.

It was Milburgh.



CHAPTER XXXIII

LING CHU—TORTURER

Much had happened to Mr. Milburgh between the time of his discovery lying bound and helpless and showing evidence that he had been in the hands of a Chinese torturer and the moment he left Sam Stay. He had read of the murder, and had been shocked, and, in his way, grieved.

It was not to save Odette Rider that he sent his note to Scotland Yard, but rather to avenge himself upon the man who had killed the only woman in the world who had touched his warped nature. Nor had he any intention of committing suicide. He had the passports which he had secured a year before in readiness for such a step (he had kept that clerical uniform of his by him all that time) and was ready at a moment's notice to leave the country.

His tickets were in his pocket, and when he despatched the district messenger to Scotland Yard he was on his way to Waterloo station to catch the Havre boat train. The police, he knew, would be watching the station, but he had no fear that they would discover beneath the benign exterior of a country clergyman, the wanted manager of Lyne's Store, even supposing that there was a warrant out for his arrest.

He was standing at a bookstall, purchasing literature to while away the hours of the journey, when he felt a hand laid on his arm and experienced a curious sinking sensation. He turned to look into a brown mask of a face he had seen before.

"Well, my man," he asked with a smile, "what can I do for you?"

He had asked the question in identical terms of Sam Stay—his brain told him that much, mechanically.

"You will come with me, Mr. Milburgh," said Ling Chu. "It will be better for you if you do not make any trouble."

"You are making a mistake."

"If I am making a mistake," said Ling Chu calmly, "you have only to tell that policeman that I have mistaken you for Milburgh, who is wanted by the police on a charge of murder, and I shall get into very serious trouble."

Milburgh's lips were quivering with fear and his face was a pasty grey.

"I will come," he said.

Ling Chu walked by his side, and they passed out of Waterloo station. The journey to Bond Street remained in Milburgh's memory like a horrible dream. He was not used to travelling on omnibuses, being something of a sybarite who spared nothing to ensure his own comfort. Ling Chu on the contrary had a penchant for buses and seemed to enjoy them.

No word was spoken until they reached the sitting-room of Tarling's flat. Milburgh expected to see the detective. He had already arrived at the conclusion that Ling Chu was but a messenger who had been sent by the man from Shanghai to bring him to his presence. But there was no sign of Tarling.

"Now, my friend, what do you want?" he asked. "It is true I am Mr. Milburgh, but when you say that I have committed murder you are telling a wicked lie."

He had gained some courage, because he had expected in the first place to be taken immediately to Scotland Yard and placed in custody. The fact that Tarling's flat lay at the end of the journey seemed to suggest that the situation was not as desperate as he had imagined.

Ling Chu, turning suddenly upon Milburgh, gripped him by the wrist, half-turning as he did so. Before Milburgh knew what was happening, he was lying on the floor, face downwards, with Ling Chu's knee in the small of his back. He felt something like a wire loop slipped about his wrists, and suffered an excruciating pain as the Chinaman tightened the connecting link of the native handcuff.

"Get up," said Ling Chu sternly, and, exerting a surprising strength, lifted the man to his feet.

"What are you going to do?" said Milburgh, his teeth chattering with fear.

There was no answer. Ling Chu gripped the man by one hand and opening the door with the other, pushed him into a room which was barely furnished. Against the wall there was an iron bed, and on to this the man was pushed, collapsing in a heap.

The Chinese thief-catcher went about his work in a scientific fashion. First he fastened and threaded a length of silk rope through one of the rails of the bed and into the slack of this he lifted Milburgh's head, so that he could not struggle except at the risk of being strangled.

Ling Chu turned him over, unfastened the handcuffs, and methodically bound first one wrist and then the other to the side of the bed.

"What are you going to do?" repeated Milburgh, but the Chinaman made no reply.

He produced from a belt beneath his blouse a wicked-looking knife, and the manager opened his mouth to shout. He was beside himself with terror, but any cause for fear had yet to come. The Chinaman stopped the cry by dropping a pillow on the man's face, and began deliberately to cut the clothing on the upper part of his body.

"If you cry out," he said calmly, "the people will think it is I who am singing! Chinamen have no music in their voices, and sometimes when I have sung my native songs, people have come up to discover who was suffering."

"You are acting illegally," breathed Milburgh, in a last attempt to save the situation. "For your crime you will suffer imprisonment"

"I shall be fortunate," said Ling Chu; "for prison is life. But you will hang at the end of a long rope."

He had lifted the pillow from Milburgh's face, and now that pallid man was following every movement of the Chinaman with a fearful eye. Presently Milburgh was stripped to the waist, and Ling Chu regarded his handiwork complacently.

He went to a cupboard in the wall, and took out a small brown bottle, which he placed on a table by the side of the bed. Then he himself sat upon the edge of the bed and spoke. His English was almost perfect, though now and again he hesitated in the choice of a word, and there were moments when he was a little stilted in his speech, and more than a little pedantic. He spoke slowly and with great deliberation.

"You do not know the Chinese people? You have not been or lived in China? When I say lived I do not mean staying for a week at a good hotel in one of the coast towns. Your Mr. Lyne lived in China in that way. It was not a successful residence."

"I know nothing about Mr. Lyne," interrupted Milburgh, sensing that Ling Chu in some way associated him with Thornton Lyne's misadventures.

"Good!" said Ling Chu, tapping the flat blade of his knife upon his palm. "If you had lived in China—in the real China—you might have a dim idea of our people and their characteristics. It is said that the Chinaman does not fear death or pain, which is a slight exaggeration, because I have known criminals who feared both."

His thin lips curved for a second in the ghost of a smile, as though at some amusing recollection. Then he grew serious again.

"From the Western standpoint we are a primitive people. From our own point of view we are rigidly honourable. Also—and this I would emphasise." He did, in fact, emphasise his words to the terror of Mr. Milburgh, with the point of his knife upon the other's broad chest, though so lightly was the knife held that Milburgh felt nothing but the slightest tingle.

"We do not set the same value upon the rights of the individual as do you people in the West. For example," he explained carefully, "we are not tender with our prisoners, if we think that by applying a little pressure to them we can assist the process of justice."

"What do you mean?" asked Milburgh, a grisly thought dawning upon his mind.

"In Britain—and in America too, I understand—though the Americans are much more enlightened on this subject—when you arrest a member of a gang you are content with cross-examining him and giving him full scope for the exercise of his inventive power. You ask him questions and go on asking and asking, and you do not know whether he is lying or telling the truth."

Mr. Milburgh began to breathe heavily.

"Has that idea sunk into your mind?" asked Ling Chu.

"I don't know what you mean," said Mr. Milburgh in a quavering voice. "All I know is that you are committing a most——"

Ling Chu stopped him with a gesture.

"I am perfectly well aware of what I am doing," he said. "Now listen to me. A week or so ago, Mr. Thornton Lyne, your employer, was found dead in Hyde Park. He was dressed in his shirt and trousers, and about his body, in an endeavour to stanch the wound, somebody had wrapped a silk night-dress. He was killed in the flat of a small lady, whose name I cannot pronounce, but you will know her."

Milburgh's eyes never left the Chinaman's, and he nodded.

"He was killed by you," said Ling Chu slowly, "because he had discovered that you had been robbing him, and you were in fear that he would hand you over to the police."

"That's a lie," roared Milburgh. "It's a lie—I tell you it's a lie!"

"I shall discover whether it is a lie in a few moments," said Ling Chu.

He put his hand inside his blouse and Milburgh watched him fascinated, but he produced nothing more deadly than a silver cigarette-case, which he opened. He selected a cigarette and lit it, and for a few minutes puffed in silence, his thoughtful eyes fixed upon Milburgh. Then he rose and went to the cupboard and took out a larger bottle and placed it beside the other.

Ling Chu pulled again at his cigarette and then threw it into the grate.

"It is in the interests of all parties," he said in his slow, halting way, "that the truth should be known, both for the sake of my honourable master, Lieh Jen, the Hunter, and his honourable Little Lady."

He took up his knife and bent over the terror-stricken man.

"For God's sake don't, don't," half screamed, half sobbed Milburgh.

"This will not hurt you," said Ling Chu, and drew four straight lines across the other's breast. The keen razor edge seemed scarcely to touch the flesh, yet where the knife had passed was a thin red mark like a scratch.

Milburgh scarcely felt a twinge of pain, only a mild irritating smarting and no more. The Chinaman laid down the knife and took up the smaller bottle.

"In this," he said, "is a vegetable extract. It is what you would call capsicum, but it is not quite like your pepper because it is distilled from a native root. In this bottle," he picked up the larger, "is a Chinese oil which immediately relieves the pain which capsicum causes."

"What are you going to do?" asked Milburgh, struggling. "You dog! You fiend!"

"With a little brush I will paint capsicum on these places." He touched Milburgh's chest with his long white ringers. "Little by little, millimetre by millimetre my brush will move, and you will experience such pain as you have never experienced before. It is pain which will rack you from head to foot, and will remain with you all your life in memory. Sometimes," he said philosophically, "it drives me mad, but I do not think it will drive you mad."

He took out the cork and dipped a little camel-hair brush in the mixture, withdrawing it moist with fluid. He was watching Milburgh all the time, and when the stout man opened his mouth to yell he thrust a silk handkerchief, which he drew with lightning speed from his pocket, into the open mouth.

"Wait, wait!" gasped the muffled voice of Milburgh. "I have something to tell you—something that your master should know."

"That is very good," said Ling Chu coolly, and pulled out the handkerchief. "You shall tell me the truth."

"What truth can I tell you?" asked the man, sweating with fear. Great beads of sweat were lying on his face.

"You shall confess the truth that you killed Thornton Lyne," said Ling Chu. "That is the only truth I want to hear."

"I swear I did not kill him! I swear it, I swear it!" raved the prisoner. "Wait, wait!" he whimpered as the other picked up the handkerchief. "Do you know what has happened to Miss Rider?"

The Chinaman checked his movement.

"To Miss Rider?" he said quickly. (He pronounced the word "Lider.")

Brokenly, gaspingly, breathlessly, Milburgh told the story of his meeting with Sam Stay. In his distress and mental anguish he reproduced faithfully not only every word, but every intonation, and the Chinaman listened with half-closed eyes. Then, when Milburgh had finished, he put down his bottle and thrust in the cork.

"My master would wish that the little woman should escape danger," he said. "To-night he does not return, so I must go myself to the hospital—you can wait."

"Let me go," said Milburgh. "I will help you."

Ling Chu shook his head.

"You can wait," he said with a sinister smile. "I will go first to the hospital and afterwards, if all is well, I will return for you."

He took a clean white towel from the dressing-table and laid it over his victim's face. Upon the towel he sprinkled the contents of a third bottle which he took from the cupboard, and Milburgh remembered no more until he looked up into the puzzled face of Tarling an hour later.



CHAPTER XXXIV

THE ARREST

Tarling stooped down and released the cords which bound Milburgh to the couch. The stout man was white and shaking, and had to be lifted into a sitting position. He sat there on the edge of the bed, his face in his hands, for five minutes, and the two men watched him curiously. Tarling had made a careful examination of the cuts on his chest, and was relieved to discover that Ling Chu—he did not doubt that the Chinaman was responsible for Milburgh's plight—had not yet employed that terrible torture which had so often brought Chinese criminals to the verge of madness.

Whiteside picked up the clothes which Ling Chu had so systematically stripped from the man's body, and placed them on the bed by Milburgh's side. Then Tarling beckoned the other into the outer room.

"What does it all mean?" asked Whiteside.

"It means," said Tarling grimly, "that my friend, Ling Chu, has been trying to discover the murderer of Thornton Lyne by methods peculiarly Chinese. Happily he was interrupted, probably as a result of Milburgh telling him that Miss Odette Rider had been spirited away."

He looked back to the drooping figure by the side of the bed.

"He's a little bigger than I," he said, "but I think some of my clothes will fit him."

He made a hasty search of his wardrobe and came back with an armful of clothes.

"Come, Milburgh," he said, "rouse yourself and dress."

The man looked up, his lower lip trembling pathetically.

"I rather think these clothes, though they may be a bad fit, will suit you a little better than your clerical garb," said Tarling sardonically.

Without a word, Milburgh took the clothes in his arms, and they left him to dress. They heard his heavy footfall, and presently the door opened and he came weakly into the sitting-room and dropped into a chair.

"Do you feel well enough to go out now?" asked Whiteside.

"Go out?" said Milburgh, looking up in alarm. "Where am I to go?"

"To Cannon Row Police Station," said the practical Whiteside. "I have a warrant for your arrest, Milburgh, on a charge of wilful murder, arson, forgery, and embezzlement."

"Wilful murder!" Milburgh's voice was high and squeaky and his shaking hands went to his mouth. "You cannot charge me with wilful murder. No, no, no! I swear to you I am innocent!"

"Where did you see Thornton Lyne last?" asked Tarling, and the man made a great effort to compose himself.

"I saw him last alive in his office," he began.

"When did you see Thornton Lyne last?" asked Tarling again. "Alive or dead."

Milburgh did not reply. Presently Whiteside dropped his hand on the man's shoulder and looked across at Tarling.

"Come along," he said briskly. "It is my duty as a police officer to warn you that anything you now say will be taken down and used as evidence against you at your trial."

"Wait, wait!" said Milburgh. His voice was husky and thick. He looked round. "Can I have a glass of water?" he begged, licking his dry lips.

Tarling brought the refreshment, which the man drank eagerly. The water seemed to revive something of his old arrogant spirit, for he got up from his chair, jerked at the collar of his ill-fitting coat—it was an old shooting-coat of Tarling's—and smiled for the first time.

"I think, gentlemen," he said with something of his old airiness, "you will have a difficulty in proving that I am concerned in the murder of Thornton Lyne. You will have as great a difficulty in proving that I had anything to do with the burning down of Solomon's office—I presume that constitutes the arson charge? And most difficult of all will be your attempt to prove that I was concerned in robbing the firm of Thornton Lyne. The lady who robbed that firm has already made a confession, as you, Mr. Tarling, are well aware." He smiled at the other, but Tarling met his eye.

"I know of no confession," he said steadily.

Mr. Milburgh inclined his head with a smirk. Though he still bore the physical evidence of the bad time through which he had been, he had recovered something of his old confidence.

"The confession was burnt," he said, "and burnt by you, Mr. Tarling. And now I think your bluff has gone on long enough."

"My bluff!" said Tarling, in his turn astonished. "What do you mean by bluff?"

"I am referring to the warrant which you suggest has been issued for my arrest," said Milburgh.

"That's no bluff." It was Whiteside who spoke, and he produced from his pocket a folded sheet of paper, which he opened and displayed under the eyes of the man. "And in case of accidents," said Whiteside, and deftly slipped a pair of handcuffs upon the man's wrists.

It may have been Milburgh's overweening faith in his own genius. It may have been, and probably was, a consciousness that he had covered his trail too well to be detected. One or other of these causes had kept him up, but now he collapsed. To Tarling it was amazing that the man had maintained this show of bravado to the last, though in his heart he knew that the Crown had a very poor case against Milburgh if the charge of embezzlement and arson were proceeded with. It was on the murder alone that a conviction could be secured; and this Milburgh evidently realised, for he made no attempt in the remarkable statement which followed to do more than hint that he had been guilty of robbing the firm. He sat huddled up in his chair, his manacled hands clasped on the table before him, and then with a jerk sat upright.

"If you'll take off these things, gentlemen," he said, jangling the connecting chain of the handcuffs, "I will tell you something which may set your mind at rest on the question of Thornton Lyne's death."

Whiteside looked at his superior questioningly, and Tarling nodded. A few seconds later the handcuffs had been removed, and Mr. Milburgh was soothing his chafed wrists.

The psychologist who attempted to analyse the condition of mind in which Tarling found himself would be faced with a difficult task. He had come to the flat beside himself with anxiety at the disappearance of Odette Rider. He had intended dashing into his rooms and out again, though what he intended doing thereafter he had no idea. The knowledge that Ling Chu was on the track of the kidnapper had served as an opiate to his jagged nerves; otherwise he could not have stayed and listened to the statement Milburgh was preparing to make.

Now and again it came back to him, like a twinge of pain, that Odette Rider was in danger; and he wanted to have done with this business, to bundle Milburgh into a prison cell, and devote the whole of his energies to tracing her. Such a twinge came to him now as he watched the stout figure at the table.

"Before you start," he said, "tell me this: What information did you give to Ling Chu which led him to leave you?"

"I told him about Miss Rider," said Milburgh, "and I advanced a theory—it was only a theory—as to what had happened to her."

"I see," said Tarling. "Now tell your story and tell it quickly, my friend, and try to keep to the truth. Who murdered Thornton Lyne?"

Milburgh twisted his head slowly towards him and smiled.

"If you could explain how the body was taken from Odette Rider's flat," he said slowly, "and left in Hyde Park, I could answer you immediately. For to this minute, I believe that Thornton Lyne was killed by Odette Rider."

Tarling drew a long breath.

"That is a lie," he said.

Mr. Milburgh was in no way put out.

"Very well," he said. "Now, perhaps you will be kind enough to listen to my story."



CHAPTER XXXV

MILBURGH'S STORY

"I do not intend," said Mr. Milburgh in his best oracular manner, "describing all the events which preceded the death of the late Thornton Lyne. Nor will I go to any length to deal with his well-known and even notorious character. He was not a good employer; he was suspicious, unjust, and in many ways mean. Mr. Lyne was, I admit, suspicious of me. He was under the impression that I had robbed the firm of very considerable sums of money—a suspicion which I in turn had long suspected, and had confirmed by a little conversation which I overheard on the first day I had the pleasure of seeing you, Mr. Tarling."

Tarling remembered that fatal day when Milburgh had come into the office at the moment that Lyne was expressing his views very freely about his subordinate.

"Of course, gentlemen," said Milburgh, "I do not for one moment admit that I robbed the firm, or that I was guilty of any criminal acts. I admit there were certain irregularities, certain carelessnesses, for which I was morally responsible; and beyond that I admit nothing. If you are making a note"—he turned to Whiteside, who was taking down the statement in shorthand, "I beg of you to make a special point of my denial. Irregularities and carelessnesses," he repeated carefully. "Beyond that I am not prepared to go."

"In other words, you are not confessing anything?"

"I am not confessing anything," agreed Mr. Milburgh with heavy gravity. "It is sufficient that Mr. Lyne suspected me, and that he was prepared to employ a detective in order to trace my defalcations, as he termed them. It is true that I lived expensively, that I own two houses, one in Camden Town and one at Hertford; but then I had speculated on the Stock Exchange and speculated very wisely.

"But I am a sensitive man, gentlemen; and the knowledge that I was responsible for certain irregularities preyed upon my mind. Let us say, for example, that I knew somebody had been robbing the firm, but that I was unable to detect that somebody. Would not the fact that I was morally responsible for the finances of Lyne's Stores cause me particular unhappiness?"

"You speak like a book," said Whiteside, "and I for one don't believe a word you say. I think you were a thief, Milburgh; but go on your own sweet way."

"I thank you," said Mr. Milburgh sarcastically. "Well, gentlemen, matters had come to a crisis. I felt my responsibility. I knew somebody had been robbing the house and I had an idea that possibly I would be suspected, and that those who were dear to me"—his voice shook for a moment, broke, and grew husky—"those who were dear to me," he repeated, "would be visited with my sins of omission.

"Miss Odette Rider had been dismissed from the firm of Lyne's Stores in consequence of her having rejected the undesirable advances of the late Mr. Lyne. Mr. Lyne turned the whole weight of his rage against this girl, and that gave me an idea.

"The night after the interview—or it may have been the same night—I refer to the interview which Mr. Tarling had with the late Thornton Lyne—I was working late at the office. I was, in fact, clearing up Mr. Lyne's desk. I had occasion to leave the office, and on my return found the place in darkness. I re-connected the light, and then discovered on the desk a particularly murderous looking revolver.

"In the statement I made to you, sir," he turned to Tarling, "I said that that pistol had not been found by me; and indeed, I professed the profoundest ignorance of its existence. I regret to confess to you that I was telling an untruth. I did find the pistol; I put it in my pocket and I took it home. It is probable that with that pistol Mr. Lyne was fatally shot."

Tarling nodded.

"I hadn't the slightest doubt about that, Milburgh. You also had another automatic pistol, purchased subsequent to the murder from John Wadham's of Holborn Circus."

Mr. Milburgh bowed his head.

"That is perfectly true, sir," he said. "I have such a weapon. I live a very lonely kind of life, and——"

"You need not explain. I merely tell you," said Tarling, "that I know where you got the pistol with which you shot at me on the night I brought Odette Rider back from Ashford."

Mr. Milburgh closed his eyes and there was resignation written largely on his face—the resignation of an ill-used and falsely-accused man.

"I think it would be better not to discuss controversial subjects," he said. "If you will allow me, I will keep to the facts."

Tarling could have laughed at the sublime impertinence of the man, but that he was growing irritable with the double strain which was being imposed upon him. It was probable that, had not this man accused Odette Rider of the murder, he would have left him to make his confession to Whiteside, and have gone alone in his hopeless search for the taxicab driven by Sam Stay.

"To resume," continued Mr. Milburgh, "I took the revolver home. You will understand that I was in a condition of mind bordering upon a nervous breakdown. I felt my responsibilities very keenly, and I felt that if Mr. Lyne would not accept my protestations of innocence, there was nothing left for me but to quit this world."

"In other words, you contemplated suicide?" said Whiteside.

"You have accurately diagnosed the situation," said Milburgh ponderously. "Miss Rider had been dismissed, and I was on the point of ruin. Her mother would be involved in the crash—those were the thoughts which ran through my mind as I sat in my humble dining-room in Camden Town. Then the idea flashed upon me. I wondered whether Odette Rider loved her mother sufficiently well to make the great sacrifice, to take full responsibility for the irregularities which had occurred in the accounts' department of Lyne's Stores, and clear away to the Continent until the matter blew over. I intended seeing her the next day, but I was still doubtful as to whether she would fall in with my views. Young people nowadays," he said sententiously, "are terribly selfish."

"As it happened, I just caught her as she was leaving for Hertford, and I put the situation before her. The poor girl was naturally shocked, but she readily fell in with my suggestion and signed the confession which you, Mr. Tarling, so thoughtfully burnt."

Whiteside looked at Tarling.

"I knew nothing of this," he said a little reproachfully.

"Go on," said Tarling. "I will explain that afterwards."

"I had previously wired the girl's mother that she would not be home that night. I also wired to Mr. Lyne, asking him to meet me at Miss Rider's flat. I took the liberty of fixing Miss Rider's name to the invitation, thinking that that would induce him to come."

"It also covered you," said Tarling, "and kept your name out of the business altogether."

"Yes," said Mr. Milburgh, as though the idea had not struck him before, "yes, it did that. I had sent Miss Rider off in a hurry. I begged that she would not go near the flat, and I promised that I myself would go there, pack the necessary articles for the journey and take them down in a taxi to Charing Cross."

"I see," said Tarling, "so it was you who packed the bag?"

"Half-packed it," corrected Mr. Milburgh. "You see, I'd made a mistake in the time the train left. It was only when I was packing the bag that I realised it was impossible for me to get down to the station in time. I had made arrangements with Miss Rider that if I did not turn up I would telephone to her a quarter of an hour before the train left. She was to await me in the lounge of a near-by hotel. I had hoped to get to her at least an hour before the train left, because I did not wish to attract attention to myself, or," he added, "to Miss Rider. When I looked at my watch, and realised that it was impossible to get down, I left the bag as it was, half-packed and went outside to the tube station and telephoned."

"How did you get in and out?" asked Tarling. "The porter on duty at the door said he saw nobody."

"I went out the back way," explained Mr. Milburgh. "It is really the simplest thing in the world to get into Miss Rider's basement flat by way of the mews behind. All the tenants have keys to the back door so that they can bring their cycles in and out, or get in their coals."

"I know that," said Tarling. "Go on."

"I am a little in advance of the actual story," said Milburgh. "The business of packing the bag takes my narrative along a little farther than I intended it to go. Having said good-bye to Miss Rider, I passed the rest of the evening perfecting my plans. It would serve no useful purpose," said Milburgh with an airy wave of his hand, "if I were to tell you the arguments I intended putting before him."

"If they did not include the betrayal of Miss Rider, I'm a Dutchman," said Tarling. "I pretty well know the arguments you intended using."

"Then, Mr. Tarling, allow me to congratulate you upon being a thought-reader," said Milburgh, "because I have not revealed my secret thoughts to any human being. However, that is beside the point. I intended to plead with Mr. Lyne. I intended to offer him the record of years of loyal service to his sainted father; and if the confession was not accepted, and if he still persisted in his revengeful plan, then, Mr. Tarling, I intended shooting myself before his eyes."

He said this with rare dramatic effect; but Tarling was unimpressed, and Whiteside looked up from his notes with a twinkle in his eye.

"You hobby seems to be preparing for suicide and changing your mind," he said.

"I am sorry to hear you speak so flippantly on a solemn subject," said Milburgh. "As I say, I waited a little too long; but I was anxious for complete darkness to fall before I made my way into the flat. This I did easily because Odette had lent me her key. I found her bag with no difficulty—it was in the dining-room on a shelf, and placing the case upon her bed, I proceeded, as best I could, for I am not very familiar with the articles of feminine toilette, to put together such things as I knew she would require on the journey.

"I was thus engaged when, as I say, it occurred to me that I had mistaken the time of the train, and, looking at my watch, I saw to my consternation that I should not be able to get down to the station in time. Happily I had arranged to call her up, as I have already told you."

"One moment," said Tarling. "How were you dressed?"

"How was I dressed? Let me think. I wore a heavy overcoat, I know," said Mr. Milburgh, "for the night was chilly and a little foggy, if you remember."

"Where was the revolver?"

"In the overcoat pocket," replied Milburgh immediately.

"Had you your overcoat on?"

Milburgh thought for a moment.

"No, I had not. I had hung it up on a hook at the foot of the bed, near the alcove which I believe Miss Rider used as a wardrobe."

"And when you went out to telephone, had you your overcoat?"

"No, that I am perfectly certain about," said Milburgh readily. "I remember thinking later how foolish it was to bring an overcoat out and not use it."

"Go on," said Tarling.

"Well, I reached the station, called up the hotel, and to my surprise and annoyance Miss Rider did not answer. I asked the porter who answered my 'phone call whether he had seen a young lady dressed in so-and-so waiting in the lounge, and he replied 'no.' Therefore," said Mr. Milburgh emphatically, "you will agree that it is possible that Miss Rider was not either at the station or at the hotel, and there was a distinct possibility that she had doubled back."

"We want the facts," interrupted Whiteside. "We have enough theories. Tell us what happened. Then we will draw our own conclusions."

"Very good, sir," replied Milburgh courteously. "By the time I had telephoned it was half-past nine o'clock. You will remember that I had wired to Mr. Lyne to meet me at the flat at eleven. Obviously there was no reason why I should go back to the flat until a few minutes before Mr. Lyne was due, to let him in. You asked me just now, sir," he turned to Tarling, "whether I had my overcoat on, and I can state most emphatically that I had not. I was going back to the flat with the intention of collecting my overcoat, when I saw a number of people walking about the mews behind the block. I had no desire to attract attention, as I have told you before, so I stood waiting until these people, who were employees of a motor-car company which had a garage behind the flat, had dispersed.

"Now, waiting at the corner of a mews on a cold spring night is a cold business, and seeing that it would be some time before the mews would be clear, I went back to the main street and strolled along until I came to a picture palace. I am partial to cinematograph displays," explained Mr. Milburgh, "and, although I was not in the mood for entertainment, yet I thought the pictures would afford a pleasant attraction. I forget the name of the film——"

"It is not necessary that you should tell us for the moment," said Tarling. "Will you please make your story as short as possible?"

Milburgh was silent for a moment.

"I am coming now to the most extraordinary fact," he said, "and I would ask you to bear in mind every detail I give you. It is to my interest that the perpetrator of this terrible crime should be brought to justice——"

Tarling's impatient gesture arrested his platitudes, but Mr. Milburgh was in no way abashed.

"When I got back to the mews I found it deserted. Standing outside the door leading to the storerooms and cellars was a two-seater car. There was nobody inside or in attendance and I looked at it curiously, not realising at the moment that it was Mr. Thornton Lyne's. What did interest me was the fact that the back gate, which I had left locked, was open. So, too, was the door leading to what I would call the underground room—it was little better—through which one had to pass to reach Odette's flat by the back way.

"I opened the door of the flat," said Mr. Milburgh impressively, "and walked in. I had extinguished the light when I went, but to my surprise I saw through the transom of Odette's bedroom that a light was burning within. I turned the handle, and even before I saw into the room, my nose was assailed by a smell of burning powder.

"The first sight which met my gaze was a man lying on the floor. He was on his face, but I turned him over, and to my horror it was Mr. Thornton Lyne. He was unconscious and bleeding from a wound in the chest," said Mr. Milburgh, "and at the moment I thought he was dead. To say that I was shocked would be mildly to describe my terrible agitation.

"My first thought—and first thoughts are sometimes right—was that he had been shot down by Odette Rider, who for some reason had returned. The room, however, was empty, and a curious circumstance, about which I will tell you, was that the window leading out to the area of the flat was wide open."

"It was protected with heavy bars," said Tarling, "so nobody could have escaped that way."

"I examined the wound," Milburgh went on, nodding his agreement with Tarling's description, "and knew that it was fatal. I do not think, however, that Mr. Thornton Lyne was dead at this time. My next thought was to stanch the wound, and I pulled open the drawer and took out the first thing which came to my hand, which was a night-dress. I had to find a pad and employed two of Odette's handkerchiefs for the purpose. First of all I stripped him of his coat and his vest, a task of some difficulty, then I fixed him up as best I could. I knew his case was hopeless, and indeed I believe," said Mr. Milburgh soberly, "I believe he was dead even before the bandaging was completed.

"Whilst I was doing something I found it was possible to forget the terrible position in which I would find myself if somebody came into the room. The moment I saw the case was hopeless, and had a second to think, I was seized with a blind panic. I snatched my overcoat from the peg and ran out of the room; through the back way into the mews, and reached Camden Town that night, a mental and physical wreck."

"Did you leave the lights burning?" asked Tarling.

Mr. Milburgh thought for a moment.

"Yes," he said, "I left the lights burning."

"And you left the body in the flat?"

"That I swear," replied Milburgh.

"And the revolver—when you got home was it in your pocket?"

Mr. Milburgh shook his head.

"Why did you not notify the police?"

"Because I was afraid," admitted Mr. Milburgh. "I was scared to death. It is a terrible confession to make, but I am a physical coward."

"There was nobody in the room?" persisted Tarling.

"Nobody so far as I could see. I tell you the window was open. You say it is barred—that is true, but a very thin person could slip between those bars. A woman——"

"Impossible," said Tarling shortly. "The bars have been very carefully measured, and nothing bigger than a rabbit could get through. And you have no idea who carried the body away?"

"None whatever," replied Milburgh firmly.

Tarling had opened his mouth to say something, when a telephone bell shrilled, and he picked up the instrument from the table on which it stood.

It was a strange voice that greeted him, a voice husky and loud, as though it were unused to telephoning.

"Tarling the name?" shouted the voice quickly.

"That is my name," said Tarling.

"She's a friend of yours, ain't she?" asked the voice.

There was a chuckle. A cold shiver ran down Tarling's spine; for, though he had never met the man, instinct told him that he was speaking to Sam Stay.

"You'll find her to-morrow," screamed the voice, "what's left of her. The woman who lured him on ... what's left of her...."

There was a click, and the receiver was hung up.

Tarling was working the telephone hook like a madman.

"What exchange was that?" he asked, and the operator after a moment supplied the information that it was Hampstead.



CHAPTER XXXVI

AT HIGHGATE CEMETERY

Odette Rider sat back in a corner of the smooth-running taxicab. Her eyes were closed, for the inevitable reaction had come. Excitement and anxiety had combined to give her the strength to walk to the cab with a firm step which had surprised the matron; but now, in the darkness and solitude, she was conscious of a depression, both physical and mental, which left her without the will or power for further effort.

The car sped through interminably long streets—in what direction she neither knew nor cared. Remember that she did not even know where the nursing home was situated. It might have been on the edge of London for all she was aware. Once, that was as the car was crossing Bond Street from Cavendish Square, she saw people turn and look at the cab and a policeman pointed and shouted something. She was too preoccupied to worry her head as to the cause.

She appreciated in a dim, vague way the skill of the taxi-driver, who seemed to be able to grope his way through and around any obstruction of traffic; and it was not until she found the cab traversing a country road that she had any suspicion that all was not well. Even then her doubts were allayed by her recognition of certain landmarks which told her she was on the Hertford Road.

"Of course," she thought. "I should be wanted at Hertford rather than in London," and she settled herself down again.

Suddenly the cab stopped, backed down a side lane, and turned in the direction from whence they had come. When he had got his car's head right, Sam Stay shut off his engine, descended from his seat, and opened the door.

"Come on out of that!" he said sharply.

"Why—what——" began the bewildered girl, but before she could go much farther the man dived in, gripped her by the wrist, and pulled her out with such violence that she fell.

"You don't know me, eh?" The words were his as he thrust his face into hers, gripping her shoulders so savagely that she could have cried out in pain.

She was on her knees, struggling to get to her feet, and she looked up at the little man wonderingly.

"I know you," she gasped. "You are the man who tried to get into my flat!"

He grinned.

"And I know you!" he laughed harshly. "You're the devil that lured him on! The best man in the world ... he's in the little vault in Highgate Cemetery. The door is just like a church. And that's where you'll be to-night, damn you! Down there I'm going to take you. Down, down, down, and leave you with him, because he wanted you!"

He was gripping her by both wrists, glaring down into her face, and there was something so wolfish, so inhuman, in the madman's staring eyes that her mouth went dry, and when she tried to scream no sound came. Then she lurched forward towards him, and he caught her under the arms and dragged her to her feet.

"Fainted, eh? You'll faint, me lady," he chuckled. "Don't you wish you might never come round, eh? I'll bet you would if you knew ... if you knew!"

He dropped her on the grass by the side of the road, took a luggage strap from the front of the cab, and bound her hands. Then he picked up the scarf she had been wearing and tied it around her mouth.

With an extraordinary display of strength he lifted her without effort and put her back into the corner of the seat. Then he slammed the door, mounted again to his place, and sent the car at top speed in the direction of London. They were on the outskirts of Hampstead when he saw a sign over a tobacconist's shop, and stopped the car a little way beyond, at the darkest part of the road. He gave a glance into the interior. The girl had slid from the seat to the floor and lay motionless.

He hurried back to the tobacconist's where the telephone sign had been. At the back of his fuddled brain lingered an idea that there was somebody who would be hurt. That cruel looking devil who was cross-examining him when he fell into a fit—Tarling. Yes, that was the name, Tarling.

It happened to be a new telephone directory, and by chance Tarling's name, although a new subscriber, had been included. In a few seconds he was talking to the detective.

He hung up the receiver and came out of the little booth, and the shopman, who had heard his harsh, loud voice, looked at him suspiciously; but Sam Stay was indifferent to the suspicions of men. He half ran, half walked back to where his cab was standing, leaped into the seat, and again drove the machine forward.

To Highgate Cemetery! That was the idea. The gates would be closed, but he could do something. Perhaps he would kill her first and then get her over the wall afterwards. It would be a grand revenge if he could get her into the cemetery alive and thrust her, the living, down amongst the dead, through those little doors which opened like church doors to the cold, dank vault below.

He screamed and sang with joy at the thought, and those pedestrians who saw the cab flash past, rocking from side to side, turned at the sound of the wild snatch of song, for Sam Stay was happy as he had not been happy in his life before.

But Highgate Cemetery was closed. The gloomy iron gates barred all entrance, and the walls were high. It was a baffling place, because houses almost entirely surrounded it; and he was half an hour seeking a suitable spot before he finally pulled up before a place where the wall did not seem so difficult. There was nobody about and little fear of interruption on the part of the girl. He had looked into the cab and had seen nothing save a huddled figure on the floor. So she was still unconscious, he thought.

He ran the car on to the sidewalk, then slipped down into the narrow space between car and wall and jerked open the door.

"Come on!" he cried exultantly. He reached out his fingers—and then something shot from the car, something lithe and supple, something that gripped the little man by the throat and hurled him back against the wall.

Stay struggled with the strength of lunacy, but Ling Chu held him in a grip of steel.



CHAPTER XXXVII

LING CHU RETURNS

Tarling dropped the telephone receiver on its hook and had sunk into a chair with a groan. His face was white—whiter than the prisoner's who sat opposite him, and he seemed to have gone old all of a sudden.

"What is it?" asked Whiteside quietly. "Who was the man?"

"Stay," said Tarling. "Stay. He has Odette! It's awful, awful!"

Whiteside, thoughtful, preoccupied; Milburgh, his face twitching with fear, watched the scene curiously.

"I'm beaten," said Tarling—and at that moment the telephone bell rang again.

He lifted the receiver and bent over the table, and Whiteside saw his eyes open in wide amazement. It was Odette's voice that greeted him.

"It is I, Odette!"

"Odette! Are you safe? Thank God for that!" he almost shouted. "Thank God for that! Where are you?"

"I am at a tobacconist's shop in——" there was a pause while she was evidently asking somebody the name of the street, and presently she came back with the information.

"But, this is wonderful!" said Tarling. "I'll be with you immediately. Whiteside, get a cab, will you? How did you get away?"

"It's rather a long story," she said. "Your Chinese friend saved me. That dreadful man stopped the cab near a tobacconist's shop to telephone. Ling Chu appeared by magic. I think he must have been lying on top of the cab, because I heard him come down by the side. He helped me out and stood me in a dark doorway, taking my place. Please don't ask me any more. I am so tired."

Half an hour later Tarling was with the girl and heard the story of the outrage. Odette Rider had recovered something of her calm, and before the detective had returned her to the nursing home she had told him the story of her adventure.

"I must have fainted," she said. "When I woke up I was lying at the bottom of the cab, which was moving at a tremendous rate. I thought of getting back to the seat, but it occurred to me that if I pretended to be faint I might have a chance of escape. When I heard the cab stop I tried to rise, but I hadn't sufficient strength. But help was near. I heard the scraping of shoes on the leather top of the car, and presently the door opened and I saw a figure which I knew was not the cabman's. He lifted me out, and fortunately the cab had stopped opposite a private house with a big porch, and to this he led me.

"'Wait,' he said. 'There is a place where you may telephone a little way along. Wait till we have gone."

"Then he went back to the cab, closed the door noiselessly, and immediately afterwards I saw Stay running along the path. In a few seconds the cab had disappeared and I dragged myself to the shop—and that's all."