"You appear to infer," said the chairman, "that this man performed these astonishing evolutions and was then hauled up the cliff?"

"That is what the appearances suggested," replied Thorndyke.

The chairman pursed up his lips, raised his eyebrows, and glanced doubtfully at his brother magistrates. Then, with a resigned air, he bowed to the witness to indicate that he was listening.

"That same night," Thorndyke resumed, "I cycled down to the shore, through the Gap, with a supply of plaster of Paris, and proceeded to take plaster moulds of the more important of the footprints." (Here the magistrates, the inspector, and Mr. Bashfield with one accord sat up at attention; Sergeant Payne swore quite audibly; and I experienced a sudden illumination respecting a certain basin and kitchen spoon which had so puzzled me on the night of Thorndyke's arrival.) "As I thought that liquid plaster might confuse or even obliterate the prints in sand, I filled up the respective footprints with dry plaster, pressed it down lightly, and then cautiously poured water on to it. The moulds, which are excellent impressions, of course show the appearance of the boots which made the footprints, and from these moulds I have prepared casts which reproduce the footprints themselves.

"The first mould that I made was that of one of the tracks from the boat up to the Gap, and of this I shall speak presently. I next made a mould of one of the footprints which have been described as those of the deceased."

"Have been described!" exclaimed the chairman. "The deceased was certainly there, and there were no other footprints, so, if they were not his, he must have flown to where he was found."

"I will call them the footprints of the deceased," replied Thorndyke imperturbably. "I took a mould of one of them, and with it, on the same mould, one of my own footprints. Here is the mould, and here is a cast from it." (He turned and took them from the triumphant Polton, who had tenderly lifted them out of the trunk in readiness.) "On looking at the cast, it will be seen that the appearances are not such as would be expected. The deceased was five feet nine inches high, but was very thin and light, weighing only nine stone six pounds, as I ascertained by weighing the body, whereas I am five feet eleven and weigh nearly thirteen stone. But yet the footprint of the deceased is nearly twice as deep as mine—that is to say, the lighter man has sunk into the sand nearly twice as deeply as the heavier man."

The magistrates were now deeply attentive. They were no longer simply listening to the despised utterances of a mere scientific expert. The cast lay before them with the two footprints side by side; the evidence appealed to their own senses and was proportionately convincing.

"This is very singular," said the chairman; "but perhaps you can explain the discrepancy?"

"I think I can," replied Thorndyke; "but I should prefer to place all the facts before you first."

"Undoubtedly that would be better," the chairman agreed. "Pray proceed."

"There was another remarkable peculiarity about these footprints," Thorndyke continued, "and that was their distance apart—the length of the stride, in fact. I measured the steps carefully from heel to heel, and found them only nineteen and a half inches. But a man of Hearn's height would have an ordinary stride of about thirty-six inches—more if he was walking fast. Walking with a stride of nineteen and a half inches he would look as if his legs were tied together.

"I next proceeded to the Bay, and took two moulds from the footprints of the man with the nailed shoes, a right and a left. Here is a cast from the mould, and it shows very clearly that the man was walking backwards."

"How does it show that?" asked the magistrate.

"There are several distinctive points. For instance, the absence of the usual 'kick off' at the toe, the slight drag behind the heel, showing the direction in which the foot was lifted, and the undisturbed impression of the sole."

"You have spoken of moulds and casts. What is the difference between them?"

"A mould is a direct, and therefore reversed, impression. A cast is the impression of a mould, and therefore a facsimile of the object. If I pour liquid plaster on a coin, when it sets I have a mould, a sunk impression, of the coin. If I pour melted wax into the mould I obtain a cast, a facsimile of the coin. A footprint is a mould of the foot. A mould of the footprint is a cast of the foot, and a cast from the mould reproduces the footprint."

"Thank you," said the magistrate. "Then your moulds from these two footprints are really facsimiles of the murderer's shoes, and can be compared with these shoes which have been put in evidence?"

"Yes, and when we compare them they demonstrate a very important fact."

"What is that?"

"It is that the prisoner's shoes were not the shoes that made those footprints." A buzz of astonishment ran through the court, but Thorndyke continued stolidly: "The prisoner's shoes were not in my possession, so I went on to Barker's pond, on the clay margin of which I had seen footprints actually made by the prisoner. I took moulds of those footprints, and compared them with these from the sand. There are several important differences, which you will see if you compare them. To facilitate the comparison I have made transparent photographs of both sets of moulds to the same scale. Now, if we put the photograph of the mould of the prisoner's right shoe over that of the murderer's right shoe, and hold the two superposed photographs up to the light, we cannot make the two pictures coincide. They are exactly of the same length, but the shoes are of different shape. Moreover, if we put one of the nails in one photograph over the corresponding nail in the other photograph, we cannot make the rest of the nails coincide. But the most conclusive fact of all—from which there is no possible escape—is that the number of nails in the two shoes is not the same. In the sole of the prisoner's right shoe there are forty nails; in that of the murderer there are forty-one. The murderer has one nail too many."

There was a deathly silence in the court as the magistrates and Mr. Bashfield pored over the moulds and the prisoner's shoes, and examined the photographs against the light. Then the chairman asked: "Are these all the facts, or have you something more to tell us?" He was evidently anxious to get the key to this riddle.

"There is more evidence, your Worship," said Anstey. "The witness examined the body of deceased." Then, turning to Thorndyke, he asked:

"You were present at the post-mortem examination?"

"I was."

"Did you form any opinion as to the cause of death?"

"Yes. I came to the conclusion that death was occasioned by an overdose of morphia."

A universal gasp of amazement greeted this statement. Then the presiding magistrate protested breathlessly:

"But there was a wound, which we have been told was capable of causing instantaneous death. Was that not the case?"

"There was undoubtedly such a wound," replied Thorndyke. "But when that wound was inflicted the deceased had already been dead from a quarter to half an hour."

"This is incredible!" exclaimed the magistrate. "But, no doubt, you can give us your reasons for this amazing conclusion?"

"My opinion," said Thorndyke, "was based on several facts. In the first place, a wound inflicted on a living body gapes rather widely, owing to the retraction of the living skin. The skin of a dead body does not retract, and the wound, consequently, does not gape. This wound gaped very slightly, showing that death was recent, I should say, within half an hour. Then a wound on the living body becomes filled with blood, and blood is shed freely on the clothing. But the wound on the deceased contained only a little blood-clot. There was hardly any blood on the clothing, and I had already noticed that there was none on the sand where the body had lain."

"And you consider this quite conclusive?" the magistrate asked doubtfully.

"I do," answered Thorndyke. "But there was other evidence which was beyond all question. The weapon had partially divided both the aorta and the pulmonary artery—the main arteries of the body. Now, during life, these great vessels are full of blood at a high internal pressure, whereas after death they become almost empty. It follows that, if this wound had been inflicted during life, the cavity in which those vessels lie would have become filled with blood. As a matter of fact, it contained practically no blood, only the merest oozing from some small veins, so that it is certain that the wound was inflicted after death. The presence and nature of the poison I ascertained by analyzing certain secretions from the body, and the analysis enabled me to judge that the quantity of the poison was large; but the contents of the stomach were sent to Professor Copland for more exact examination."

"Is the result of Professor Copland's analysis known?" the magistrate asked Anstey.

"The professor is here, your Worship," replied Anstey, "and is prepared to swear to having obtained over one grain of morphia from the contents of the stomach; and as this, which is in itself a poisonous dose, is only the unabsorbed residue of what was actually swallowed, the total quantity taken must have been very large indeed."

"Thank you," said the magistrate. "And now, Dr. Thorndyke, if you have given us all the facts, perhaps you will tell us what conclusions you have drawn from them."

"The facts which I have stated," said Thorndyke, "appear to me to indicate the following sequence of events. The deceased died about midnight on September 27, from the effects of a poisonous dose of morphia, how or by whom administered I offer no opinion. I think that his body was conveyed in a boat to Sundersley Gap. The boat probably contained three men, of whom one remained in charge of it, one walked up the Gap and along the cliff towards St. Bridget's Bay, and the third, having put on the shoes of the deceased, carried the body along the shore to the Bay. This would account for the great depth and short stride of the tracks that have been spoken of as those of the deceased. Having reached the Bay, I believe that this man laid the corpse down on his tracks, and then trampled the sand in the neighbourhood. He next took off deceased's shoes and put them on the corpse; then he put on a pair of boots or shoes which he had been carrying—perhaps hung round his neck—and which had been prepared with nails to imitate Draper's shoes. In these shoes he again trampled over the area near the corpse. Then he walked backwards to the Shepherd's Path, and from it again, still backwards, to the face of the cliff. Here his accomplice had lowered a rope, by which he climbed up to the top. At the top he took off the nailed shoes, and the two men walked back to the Gap, where the man who had carried the rope took his confederate on his back, and carried him down to the boat to avoid leaving the tracks of stockinged feet. The tracks that I saw at the Gap certainly indicated that the man was carrying something very heavy when he returned to the boat."

"But why should the man have climbed a rope up the cliff when he could have walked up the Shepherd's Path?" the magistrate asked.

"Because," replied Thorndyke, "there would then have been a set of tracks leading out of the Bay without a corresponding set leading into it; and this would have instantly suggested to a smart police-officer—such as Sergeant Payne—a landing from a boat."

"Your explanation is highly ingenious," said the magistrate, "and appears to cover all the very remarkable facts. Have you anything more to tell us?"

"No, your Worship," was the reply, "excepting" (here he took from Polton the last pair of moulds and passed them up to the magistrate) "that you will probably find these moulds of importance presently."

As Thorndyke stepped from the box—for there was no cross-examination—the magistrates scrutinized the moulds with an air of perplexity; but they were too discreet to make any remark.

When the evidence of Professor Copland (which showed that an unquestionably lethal dose of morphia must have been swallowed) had been taken, the clerk called out the—to me—unfamiliar name of Jacob Gummer. Thereupon an enormous pair of brown dreadnought trousers, from the upper end of which a smack-boy's head and shoulders protruded, walked into the witness-box.

Jacob admitted at the outset that he was a smack-master's apprentice, and that he bad been "hired out" by his master to one Mr. Jezzard as deck-hand and cabin-boy of the yacht Otter.

"Now, Gummer," said Anstey, "do you remember the prisoner coming on board the yacht?"

"Yes. He has been on board twice. The first time was about a month ago. He went for a sail with us then. The second time was on the night when Mr. Hearn was murdered."

"Do you remember what sort of boots the prisoner was wearing the first time he came?"

"Yes. They were shoes with a lot of nails in the soles. I remember them because Mr. Jezzard made him take them off and put on a canvas pair."

"What was done with the nailed shoes?"

"Mr. Jezzard took 'em below to the cabin."

"And did Mr. Jezzard come up on deck again directly?"

"No. He stayed down in the cabin about ten minutes."

"Do you remember a parcel being delivered on board from a London boot-maker?"

"Yes. The postman brought it about four or five days after Mr. Draper had been on board. It was labelled 'Walker Bros., Boot and Shoe Makers, London.' Mr. Jezzard took a pair of shoes from it, for I saw them on the locker in the cabin the same day."

"Did you ever see him wear them?"

"No. I never see 'em again."

"Have you ever heard sounds of hammering on the yacht?"

"Yes. The night after the parcel came I was on the quay alongside, and I heard someone a-hammering in the cabin."

"What did the hammering sound like?"

"It sounded like a cobbler a-hammering in nails."

"Have you over seen any boot-nails on the yacht?"

"Yes. When I was a-clearin' up the cabin the next mornin', I found a hobnail on the floor in a corner by the locker."

"Were you on board on the night when Mr. Hearn died?"

"Yes. I'd been ashore, but I came aboard about half-past nine."

"Did you see Mr. Hearn go ashore?"

"I see him leave the yacht. I had turned into my bunk and gone to sleep, when Mr. Jezzard calls down to me: 'We're putting Mr. Hearn ashore,' says he; 'and then,' he says, 'we're a-going for an hour's fishing. You needn't sit up,' he says, and with that he shuts the scuttle. Then I got up and slid back the scuttle and put my head out, and I see Mr. Jezzard and Mr. Leach a-helpin' Mr. Hearn acrost the deck. Mr. Hearn he looked as if he was drunk. They got him into the boat—and a rare job they had—and Mr. Pitford, what was in the boat already, he pushed off. And then I popped my head in again, 'cause I didn't want them to see me."

"Did they row to the steps?"

"No. I put my head out again when they were gone, and I heard 'em row round the yacht, and then pull out towards the mouth of the harbour. I couldn't see the boat, 'cause it was a very dark night."

"Very well. Now I am going to ask you about another matter. Do you know anyone of the name of Polton?"

"Yes," replied Gummer, turning a dusky red. "I've just found out his real name. I thought he was called Simmons."

"Tell us what you know about him," said Anstey, with a mischievous smile.

"Well," said the boy, with a ferocious scowl at the bland and smiling Polton, "one day he come down to the yacht when the gentlemen had gone ashore. I believe he'd seen 'em go. And he offers me ten shillin' to let him see all the boots and shoes we'd got on board. I didn't see no harm, so I turns out the whole lot in the cabin for him to look at. While he was lookin' at 'em he asks me to fetch a pair of mine from the fo'c'sle, so I fetches 'em. When I come back he was pitchin' the boots and shoes back into the locker. Then, presently, he nips off, and when he was gone I looked over the shoes, and then I found there was a pair missing. They was an old pair of Mr. Jezzard's, and what made him nick 'em is more than I can understand."

"Would you know those shoes if you saw them!"

"Yes, I should," replied the lad.

"Are these the pair?" Anstey handed the boy a pair of dilapidated canvas shoes, which he seized eagerly.

"Yes, these is the ones what he stole!" he exclaimed.

Anstey took them back from the boy's reluctant hands, and passed them up to the magistrate's desk. "I think," said he, "that if your Worship will compare these shoes with the last pair of moulds, you will have no doubt that these are the shoes which made the footprints from the sea to Sundersley Gap and back again."

The magistrates together compared the shoes and the moulds amidst a breathless silence. At length the chairman laid them down on the desk.

"It is impossible to doubt it," said he. "The broken heel and the tear in the rubber sole, with the remains of the chequered pattern, make the identity practically certain."

As the chairman made this statement I involuntarily glanced round to the place where Jezzard was sitting. But he was not there; neither he, nor Pitford, nor Leach. Taking advantage of the preoccupation of the Court, they had quietly slipped out of the door. But I was not the only person who had noted their absence. The inspector and the sergeant were already in earnest consultation, and a minute later they, too, hurriedly departed.

The proceedings now speedily came to an end. After a brief discussion with his brother-magistrates, the chairman addressed the Court.

"The remarkable and I may say startling evidence, which has been heard in this court to-day, if it has not fixed the guilt of this crime on any individual, has, at any rate, made it clear to our satisfaction that the prisoner is not the guilty person, and he is accordingly discharged. Mr. Draper, I have great pleasure in informing you that you are at liberty to leave the court, and that you do so entirely clear of all suspicion; and I congratulate you very heartily on the skill and ingenuity of your legal advisers, but for which the decision of the Court would, I am afraid, have been very different."

That evening, lawyers, witnesses, and the jubilant and grateful client gathered round a truly festive board to dine, and fight over again the battle of the day. But we were scarcely halfway through our meal when, to the indignation of the servants, Sergeant Payne burst breathlessly into the room.

"They've gone, sir!" he exclaimed, addressing Thorndyke. "They've given us the slip for good."

"Why, how can that be?" asked Thorndyke.

"They're dead, sir! All three of them!"

"Dead!" we all exclaimed.

"Yes. They made a burst for the yacht when they left the court, and they got on board and put out to sea at once, hoping, no doubt, to get clear as the light was just failing. But they were in such a hurry that they did not see a steam trawler that was entering, and was hidden by the pier. Then, just at the entrance, as the yacht was creeping out, the trawler hit her amidships, and fairly cut her in two. The three men were in the water in an instant, and were swept away in the eddy behind the north pier; and before any boat could put out to them they had all gone under. Jezzard's body came up on the beach just as I was coming away."

We were all silent and a little awed, but if any of us felt regret at the catastrophe, it was at the thought that three such cold-blooded villains should have made so easy an exit; and to one of us, at least, the news came as a blessed relief.



II

THE STRANGER'S LATCHKEY

The contrariety of human nature is a subject that has given a surprising amount of occupation to makers of proverbs and to those moral philosophers who make it their province to discover and expound the glaringly obvious; and especially have they been concerned to enlarge upon that form of perverseness which engenders dislike of things offered under compulsion, and arouses desire of them as soon as their attainment becomes difficult or impossible. They assure us that a man who has had a given thing within his reach and put it by, will, as soon as it is beyond his reach, find it the one thing necessary and desirable; even as the domestic cat which has turned disdainfully from the preferred saucer, may presently be seen with her head jammed hard in the milk-jug, or, secretly and with horrible relish, slaking her thirst at the scullery sink.

To this peculiarity of the human mind was due, no doubt, the fact that no sooner had I abandoned the clinical side of my profession in favour of the legal, and taken up my abode in the chambers of my friend Thorndyke, the famous medico-legal expert, to act as his assistant or junior, than my former mode of life—that of a locum tenens, or minder of other men's practices—which had, when I was following it, seemed intolerably irksome, now appeared to possess many desirable features; and I found myself occasionally hankering to sit once more by the bedside, to puzzle out the perplexing train of symptoms, and to wield that power—the greatest, after all, possessed by man—the power to banish suffering and ward off the approach of death itself.

Hence it was that on a certain morning of the long vacation I found myself installed at The Larches, Burling, in full charge of the practice of my old friend Dr. Hanshaw, who was taking a fishing holiday in Norway. I was not left desolate, however, for Mrs. Hanshaw remained at her post, and the roomy, old-fashioned house accommodated three visitors in addition. One of these was Dr. Hanshaw's sister, a Mrs. Haldean, the widow of a wealthy Manchester cotton factor; the second was her niece by marriage, Miss Lucy Haldean, a very handsome and charming girl of twenty-three; while the third was no less a person than Master Fred, the only child of Mrs. Haldean, and a strapping boy of six.

"It is quite like old times—and very pleasant old times, too—to see you sitting at our breakfast-table, Dr. Jervis." With these gracious words and a friendly smile, Mrs. Hanshaw handed me my tea-cup.

I bowed. "The highest pleasure of the altruist," I replied, "is in contemplating the good fortune of others."

Mrs. Haldean laughed. "Thank you," she said. "You are quite unchanged, I perceive. Still as suave and as—shall I say oleaginous?"

"No, please don't!" I exclaimed in a tone of alarm.

"Then I won't. But what does Dr. Thorndyke say to this backsliding on your part? How does he regard this relapse from medical jurisprudence to common general practice?"

"Thorndyke," said I, "is unmoved by any catastrophe; and he not only regards the 'Decline and Fall-off of the Medical Jurist' with philosophic calm, but he even favours the relapse, as you call it. He thinks it may be useful to me to study the application of medico-legal methods to general practice."

"That sounds rather unpleasant—for the patients, I mean," remarked Miss Haldean.

"Very," agreed her aunt. "Most cold-blooded. What sort of man is Dr. Thorndyke? I feel quite curious about him. Is he at all human, for instance?"

"He is entirely human," I replied; "the accepted tests of humanity being, as I understand, the habitual adoption of the erect posture in locomotion, and the relative position of the end of the thumb—"

"I don't mean that," interrupted Mrs. Haldean. "I mean human in things that matter."

"I think those things matter," I rejoined. "Consider, Mrs. Haldean, what would happen if my learned colleague were to be seen in wig and gown, walking towards the Law Courts in any posture other than the erect. It would be a public scandal."

"Don't talk to him, Mabel," said Mrs. Hanshaw; "he is incorrigible. What are you doing with yourself this morning, Lucy?"

Miss Haldean (who had hastily set down her cup to laugh at my imaginary picture of Dr. Thorndyke in the character of a quadruped) considered a moment.

"I think I shall sketch that group of birches at the edge of Bradham Wood," she said.

"Then, in that case," said I, "I can carry your traps for you, for I have to see a patient in Bradham."

"He is making the most of his time," remarked Mrs. Haldean maliciously to my hostess. "He knows that when Mr. Winter arrives he will retire into the extreme background."

Douglas Winter, whose arrival was expected in the course of the week, was Miss Haldean's fiance. Their engagement had been somewhat protracted, and was likely to be more so, unless one of them received some unexpected accession of means; for Douglas was a subaltern in the Royal Engineers, living, with great difficulty, on his pay, while Lucy Haldean subsisted on an almost invisible allowance left her by an uncle.

I was about to reply to Mrs. Haldean when a patient was announced, and, as I had finished my breakfast, I made my excuses and left the table.

Half an hour later, when I started along the road to the village of Bradham, I had two companions. Master Freddy had joined the party, and he disputed with me the privilege of carrying the "traps," with the result that a compromise was effected, by which he carried the camp-stool, leaving me in possession of the easel, the bag, and a large bound sketching-block.

"Where are you going to work this morning?" I asked, when we had trudged on some distance.

"Just off the road to the left there, at the edge of the wood. Not very far from the house of the mysterious stranger." She glanced at me mischievously as she made this reply, and chuckled with delight when I rose at the bait.

"What house do you mean?" I inquired.

"Ha!" she exclaimed, "the investigator of mysteries is aroused. He saith, 'Ha! ha!' amidst the trumpets; he smelleth the battle afar off."

"Explain instantly," I commanded, "or I drop your sketch-block into the very next puddle."

"You terrify me," said she. "But I will explain, only there isn't any mystery except to the bucolic mind. The house is called Lavender Cottage, and it stands alone in the fields behind the wood. A fortnight ago it was let furnished to a stranger named Whitelock, who has taken it for the purpose of studying the botany of the district; and the only really mysterious thing about him is that no one has seen him. All arrangements with the house-agent were made by letter, and, as far as I can make out, none of the local tradespeople supply him, so he must get his things from a distance—even his bread, which really is rather odd. Now say I am an inquisitive, gossiping country bumpkin."

"I was going to," I answered, "but it is no use now."

She relieved me of her sketching appliances with pretended indignation, and crossed into the meadow, leaving me to pursue my way alone; and when I presently looked back, she was setting up her easel and stool, gravely assisted by Freddy.

My "round," though not a long one, took up more time than I had anticipated, and it was already past the luncheon hour when I passed the place where I had left Miss Haldean. She was gone, as I had expected, and I hurried homewards, anxious to be as nearly punctual as possible. When I entered the dining-room, I found Mrs. Haldean and our hostess seated at the table, and both looked up at me expectantly.

"Have you seen Lucy?" the former inquired.

"No," I answered. "Hasn't she come back? I expected to find her here. She had left the wood when I passed just now."

Mrs. Haldean knitted her brows anxiously. "It is very strange," she said, "and very thoughtless of her. Freddy will be famished."

I hurried over my lunch, for two fresh messages had come in from outlying hamlets, effectually dispelling my visions of a quiet afternoon; and as the minutes passed without bringing any signs of the absentees, Mrs. Haldean became more and more restless and anxious. At length her suspense became unbearable; she rose suddenly, announcing her intention of cycling up the road to look for the defaulters, but as she was moving towards the door, it burst open, and Lucy Haldean staggered into the room.

Her appearance filled us with alarm. She was deadly pale, breathless, and wild-eyed; her dress was draggled and torn, and she trembled from head to foot.

"Good God, Lucy!" gasped Mrs. Haldean. "What has happened? And where is Freddy?" she added in a sterner tone.

"He is lost!" replied Miss Haldean in a faint voice, and with a catch in her breath. "He strayed away while I was painting. I have searched the wood through, and called to him, and looked in all the meadows. Oh! where can he have gone?" Her sketching "kit," with which she was loaded, slipped from her grasp and rattled on to the floor, and she buried her face in her hands and sobbed hysterically.

"And you have dared to come back without him?" exclaimed Mrs. Haldean.

"I was getting exhausted. I came back for help," was the faint reply.

"Of course she was exhausted," said Mrs. Hanshaw. "Come, Lucy: come, Mabel; don't make mountains out of molehills. The little man is safe enough. We shall find him presently, or he will come home by himself. Come and have some food, Lucy."

Miss Haldean shook her head. "I can't, Mrs. Hanshaw—really I can't," she said; and, seeing that she was in a state of utter exhaustion, I poured out a glass of wine and made her drink it.

Mrs. Haldean darted from the room, and returned immediately, putting on her hat. "You have got to come with me and show me whore you lost him," she said.

"She can't do that, you know," I said rather brusquely. "She will have to lie down for the present. But I know the place, and will cycle up with you."

"Very well," replied Mrs. Haldean, "that will do. What time was it," she asked, turning to her niece, "when you lost the child? and which way—"

She paused abruptly, and I looked at her in surprise. She had suddenly turned ashen and ghastly; her face had set like a mask of stone, with parted lips and staring eyes that were fixed in horror on her niece.

There was a deathly silence for a few seconds. Then, in a terrible voice, she demanded: "What is that on your dress, Lucy?" And, after a pause, her voice rose into a shriek. "What have you done to my boy?"

I glanced in astonishment at the dazed and terrified girl, and then I saw what her aunt had seen—a good-sized blood-stain halfway down the front of her skirt, and another smaller one on her right sleeve. The girl herself looked down at the sinister patch of red and then up at her aunt. "It looks like—like blood," she stammered. "Yes, it is—I think—of course it is. He struck his nose—and it bled—"

"Come," interrupted Mrs. Haldean, "let us go," and she rushed from the room, leaving me to follow.

I lifted Miss Haldean, who was half fainting with fatigue and agitation, on to the sofa, and, whispering a few words of encouragement into her ear, turned to Mrs. Hanshaw.

"I can't stay with Mrs. Haldean," I said. "There are two visits to be made at Rebworth. Will you send the dogcart up the road with somebody to take my place?"

"Yes," she answered. "I will send Giles, or come myself if Lucy is fit to be left."

I ran to the stables for my bicycle, and as I pedalled out into the road I could see Mrs. Haldean already far ahead, driving her machine at frantic speed. I followed at a rapid pace, but it was not until we approached the commencement of the wood, when she slowed down somewhat, that I overtook her.

"This is the place," I said, as we reached the spot where I had parted from Miss Haldean. We dismounted and wheeled our bicycles through the gate, and laying them down beside the hedge, crossed the meadow and entered the wood.

It was a terrible experience, and one that I shall never forget—the white-faced, distracted woman, tramping in her flimsy house-shoes over the rough ground, bursting through the bushes, regardless of the thorny branches that dragged at skin and hair and dainty clothing, and sending forth from time to time a tremulous cry, so dreadfully pathetic in its mingling of terror and coaxing softness, that a lump rose in my throat, and I could barely keep my self-control.

"Freddy! Freddy-boy! Mummy's here, darling!" The wailing cry sounded through the leafy solitude; but no answer came save the whirr of wings or the chatter of startled birds. But even more shocking than that terrible cry—more disturbing and eloquent with dreadful suggestion—was the way in which she peered, furtively, but with fearful expectation, among the roots of the bushes, or halted to gaze upon every molehill and hummock, every depression or disturbance of the ground.

So we stumbled on for a while, with never a word spoken, until we came to a beaten track or footpath leading across the wood. Here I paused to examine the footprints, of which several were visible in the soft earth, though none seemed very recent; but, proceeding a little way down the track, I perceived, crossing it, a set of fresh imprints, which I recognized at once as Miss Haldean's. She was wearing, as I knew, a pair of brown golf-boots, with rubber pads in the leather soles, and the prints made by them were unmistakable.

"Miss Haldean crossed the path here," I said, pointing to the footprints.

"Don't speak of her before me!" exclaimed Mrs. Haldean; but she gazed eagerly at the footprints, nevertheless, and immediately plunged into the wood to follow the tracks.

"You are very unjust to your niece, Mrs. Haldean," I ventured to protest.

She halted, and faced me with an angry frown.

"You don't understand!" she exclaimed. "You don't know, perhaps, that if my poor child is really dead, Lucy Haldean will be a rich woman, and may marry to-morrow if she chooses?"

"I did not know that," I answered, "but if I had, I should have said the same."

"Of course you would," she retorted bitterly. "A pretty face can muddle any man's judgment."

She turned away abruptly to resume her pursuit, and I followed in silence. The trail which we were following zigzagged through the thickest part of the wood, but its devious windings eventually brought us out on to an open space on the farther side. Here we at once perceived traces of another kind. A litter of dirty rags, pieces of paper, scraps of stale bread, bones and feathers, with hoof-marks, wheel ruts, and the ashes of a large wood fire, pointed clearly to a gipsy encampment recently broken up. I laid my hand on the heap of ashes, and found it still warm, and on scattering it with my foot a layer of glowing cinders appeared at the bottom.

"These people have only been gone an hour or two," I said. "It would be well to have them followed without delay."

A gleam of hope shone on the drawn, white face as the bereaved mother caught eagerly at my suggestion.

"Yes," she exclaimed breathlessly; "she may have bribed them to take him away. Let us see which way they went."

We followed the wheel tracks down to the road, and found that they turned towards London. At the same time I perceived the dogcart in the distance, with Mrs. Hanshaw standing beside it; and, as the coachman observed me, he whipped up his horse and approached.

"I shall have to go," I said, "but Mrs. Hanshaw will help you to continue the search."

"And you will make inquiries about the gipsies, won't you?" she said.

I promised to do so, and as the dogcart now came up, I climbed to the seat, and drove off briskly up the London Road.

The extent of a country doctor's round is always an unknown quantity. On the present occasion I picked up three additional patients, and as one of them was a case of incipient pleurisy, which required to have the chest strapped, and another was a neglected dislocation of the shoulder, a great deal of time was taken up. Moreover, the gipsies, whom I ran to earth on Rebworth Common, delayed me considerably, though I had to leave the rural constable to carry out the actual search, and, as a result, the clock of Burling Church was striking six as I drove through the village on my way home.

I got down at the front gate, leaving the coachman to take the dogcart round, and walked up the drive; and my astonishment may be imagined when, on turning the corner, I came suddenly upon the inspector of the local police in earnest conversation with no less a person than John Thorndyke.

"What on earth has brought you here?" I exclaimed, my surprise getting the better of my manners.

"The ultimate motive-force," he replied, "was an impulsive lady named Mrs. Haldean. She telegraphed for me—in your name."

"She oughtn't to have done that," I said.

"Perhaps not. But the ethics of an agitated woman are not worth discussing, and she has done something much worse—she has applied to the local J.P. (a retired Major-General), and our gallant and unlearned friend has issued a warrant for the arrest of Lucy Haldean on the charge of murder."

"But there has been no murder!" I exclaimed.

"That," said Thorndyke, "is a legal subtlety that he does not appreciate. He has learned his law in the orderly-room, where the qualifications to practise are an irritable temper and a loud voice. However, the practical point is, inspector, that the warrant is irregular. You can't arrest people for hypothetical crimes."

The officer drew a deep breath of relief. He knew all about the irregularity, and now joyfully took refuge behind Thorndyke's great reputation.

When he had departed—with a brief note from my colleague to the General—Thorndyke slipped his arm through mine, and we strolled towards the house.

"This is a grim business, Jervis," said he. "That boy has got to be found for everybody's sake. Can you come with me when you have had some food?"

"Of course I can. I have been saving myself all the afternoon with a view to continuing the search."

"Good," said Thorndyke. "Then come in and feed."

A nondescript meal, half tea and half dinner, was already prepared, and Mrs. Hanshaw, grave but self-possessed, presided at the table.

"Mabel is still out with Giles, searching for the boy," she said. "You have heard what she has done!"

I nodded.

"It was dreadful of her," continued Mrs. Hanshaw, "but she is half mad, poor thing. You might run up and say a few kind words to poor Lucy while I make the tea."

I went up at once and knocked at Miss Haldean's door, and, being bidden to enter, found her lying on the sofa, red-eyed and pale, the very ghost of the merry, laughing girl who had gone out with me in the morning. I drew up a chair, and sat down by her side, and as I took the hand she held out to me, she said:

"It is good of you to come and see a miserable wretch like me. And Jane has been so sweet to me, Dr. Jervis; but Aunt Mabel thinks I have killed Freddy—you know she does—and it was really my fault that he was lost. I shall never forgive myself!"

She burst into a passion of sobbing, and I proceeded to chide her gently.

"You are a silly little woman," I said, "to take this nonsense to heart as you are doing. Your aunt is not responsible just now, as you must know; but when we bring the boy home she shall make you a handsome apology. I will see to that."

She pressed my hand gratefully, and as the bell now rang for tea, I bade her have courage and went downstairs.

"You need not trouble about the practice," said Mrs. Hanshaw, as I concluded my lightning repast, and Thorndyke went off to get our bicycles. "Dr. Symons has heard of our trouble, and has called to say that he will take anything that turns up; so we shall expect you when we see you."

"How do you like Thorndyke?" I asked.

"He is quite charming," she replied enthusiastically; "so tactful and kind, and so handsome, too. You didn't tell us that. But here he is. Good-bye, and good luck."

She pressed my hand, and I went out into the drive, where Thorndyke and the coachman were standing with three bicycles.

"I see you have brought your outfit," I said as we turned into the road; for Thorndyke's machine bore a large canvas-covered case strapped on to a strong bracket.

"Yes; there are many things that we may want on a quest of this kind. How did you find Miss Haldean?"

"Very miserable, poor girl. By the way, have you heard anything about her pecuniary interest in the child's death?"

"Yes," said Thorndyke. "It appears that the late Mr. Haldean used up all his brains on his business, and had none left for the making of his will—as often happens. He left almost the whole of his property—about eighty thousand pounds—to his son, the widow to have a life-interest in it. He also left to his late brother's daughter, Lucy, fifty pounds a year, and to his surviving brother Percy, who seems to have been a good-for-nothing, a hundred a year for life. But—and here is the utter folly of the thing—if the son should die, the property was to be equally divided between the brother and the niece, with the exception of five hundred a year for life to the widow. It was an insane arrangement."

"Quite," I agreed, "and a very dangerous one for Lucy Haldean, as things are at present."

"Very; especially if anything should have happened to the child."

"What are you going to do now?" I inquired, seeing that Thorndyke rode on as if with a definite purpose.

"There is a footpath through the wood," he replied. "I want to examine that. And there is a house behind the wood which I should like to see."

"The house of the mysterious stranger," I suggested.

"Precisely. Mysterious and solitary strangers invite inquiry."

We drew up at the entrance to the footpath, leaving Willett the coachman in charge of the three machines, and proceeded up the narrow track. As we went, Thorndyke looked back at the prints of our feet, and nodded approvingly.

"This soft loam," he remarked, "yields beautifully clear impressions, and yesterday's rain has made it perfect."

We had not gone far when we perceived a set of footprints which I recognized, as did Thorndyke also, for he remarked: "Miss Haldean—running, and alone." Presently we met them again, crossing in the opposite direction, together with the prints of small shoes with very high heels. "Mrs. Haldean on the track of her niece," was Thorndyke's comment; and a minute later we encountered them both again, accompanied by my own footprints.

"The boy does not seem to have crossed the path at all," I remarked as we walked on, keeping off the track itself to avoid confusing the footprints.

"We shall know when we have examined the whole length," replied Thorndyke, plodding on with his eyes on the ground. "Ha! here is something new," he added, stopping short and stooping down eagerly—"a man with a thick stick—a smallish man, rather lame. Notice the difference between the two feet, and the peculiar way in which he uses his stick. Yes, Jervis, there is a great deal to interest us in these footprints. Do you notice anything very suggestive about them?"

"Nothing but what you have mentioned," I replied. "What do you mean?"

"Well, first there is the very singular character of the prints themselves, which we will consider presently. You observe that this man came down the path, and at this point turned off into the wood; then he returned from the wood and went up the path again. The imposition of the prints makes that clear. But now look at the two sets of prints, and compare them. Do you notice any difference?"

"The returning footprints seem more distinct—better impressions."

"Yes; they are noticeably deeper. But there is something else." He produced a spring tape from his pocket, and took half a dozen measurements. "You see," he said, "the first set of footprints have a stride of twenty-one inches from heel to heel—a short stride; but he is a smallish man, and lame; the returning ones have a stride of only nineteen and a half inches; hence the returning footprints are deeper than the others, and the steps are shorter. What do you make of that?"

"It would suggest that he was carrying a burden when he returned," I replied.

"Yes; and a heavy one, to make that difference in the depth. I think I will get you to go and fetch Willett and the bicycles."

I strode off down the path to the entrance, and, taking possession of Thorndyke's machine, with its precious case of instruments, bade Willett follow with the other two.

When I returned, my colleague was standing with his hands behind him, gazing with intense preoccupation at the footprints. He looked up sharply as we approached, and called out to us to keep off the path if possible.

"Stay here with the machines, Willett," said he. "You and I, Jervis, must go and see where our friend went to when he left the path, and what was the burden that he picked up."

We struck off into the wood, where last year's dead leaves made the footprints almost indistinguishable, and followed the faint double track for a long distance between the dense clumps of bushes. Suddenly my eye caught, beside the double trail, a third row of tracks, smaller in size and closer together. Thorndyke had seen them, too, and already his measuring-tape was in his hand.

"Eleven and a half inches to the stride," said he. "That will be the boy, Jervis. But the light is getting weak. We must press on quickly, or we shall lose it."

Some fifty yards farther on, the man's tracks ceased abruptly, but the small ones continued alone; and we followed them as rapidly as we could in the fading light.

"There can be no reasonable doubt that these are the child's tracks," said Thorndyke; "but I should like to find a definite footprint to make the identification absolutely certain."

A few seconds later he halted with an exclamation, and stooped on one knee. A little heap of fresh earth from the surface-burrow of a mole had been thrown up over the dead leaves; and fairly planted on it was the clean and sharp impression of a diminutive foot, with a rubber heel showing a central star. Thorndyke drew from his pocket a tiny shoe, and pressed it on the soft earth beside the footprint; and when he raised it the second impression was identical with the first.

"The boy had two pairs of shoes exactly alike," he said, "so I borrowed one of the duplicate pair."

He turned, and began to retrace his steps rapidly, following our own fresh tracks, and stopping only once to point out the place where the unknown man had picked the child up. When we regained the path we proceeded without delay until we emerged from the wood within a hundred yards of the cottage.

"I see Mrs. Haldean has been here with Giles," remarked Thorndyke, as he pushed open the garden-gate. "I wonder if they saw anybody."

He advanced to the door, and having first rapped with his knuckles and then kicked at it vigorously, tried the handle.

"Locked," he observed, "but I see the key is in the lock, so we can get in if we want to. Let us try the back."

The back door was locked, too, but the key had been removed.

"He came out this way, evidently," said Thorndyke. "though he went in at the front, as I suppose you noticed. Let us see where he went."

The back garden was a small, fenced patch of ground, with an earth path leading down to the back gate. A little way beyond the gate was a small barn or outhouse.

"We are in luck," Thorndyke remarked, with a glance at the path. "Yesterday's rain has cleared away all old footprints, and prepared the surface for new ones. You see there are three sets of excellent impressions—two leading away from the house, and one set towards it. Now, you notice that both of the sets leading from the house are characterized by deep impressions and short steps, while the set leading to the house has lighter impressions and longer steps. The obvious inference is that he went down the path with a heavy burden, came back empty-handed, and went down again—and finally—with another heavy burden. You observe, too, that he walked with his stick on each occasion."

By this time we had reached the bottom of the garden. Opening the gate, we followed the tracks towards the outhouse, which stood beside a cart-track; but as we came round the corner we both stopped short and looked at one another. On the soft earth were the very distinct impressions of the tyres of a motor-car leading from the wide door of the outhouse. Finding that the door was unfastened, Thorndyke opened it, and looked in, to satisfy himself that the place was empty. Then he fell to studying the tracks.

"The course of events is pretty plain," he observed. "First the fellow brought down his luggage, started the engine, and got the car out—you can see where it stood, both by the little pool of oil, and by the widening and blurring of the wheel-tracks from the vibration of the free engine; then he went back and fetched the boy—carried him pick-a-back, I should say, judging by the depth of the toe-marks in the last set of footprints. That was a tactical mistake. He should have taken the boy straight into the shed."

He pointed as he spoke to one of the footprints beside the wheel-tracks, from the toe of which projected a small segment of the print of a little rubber heel.

We now made our way back to the house, where we found Willett pensively rapping at the front door with a cycle-spanner. Thorndyke took a last glance, with his hand in his pocket, at an open window above, and then, to the coachman's intense delight, brought forth what looked uncommonly like a small bunch of skeleton keys. One of these he inserted into the keyhole, and as he gave it a turn, the lock clicked, and the door stood open.

The little sitting-room, which we now entered, was furnished with the barest necessaries. Its centre was occupied by an oilcloth-covered table, on which I observed with surprise a dismembered "Bee" clock (the works of which had been taken apart with a tin-opener that lay beside them) and a box-wood bird-call. At these objects Thorndyke glanced and nodded, as though they fitted into some theory that he had formed; examined carefully the oilcloth around the litter of wheels and pinions, and then proceeded on a tour of inspection round the room, peering inquisitively into the kitchen and store-cupboard.

"Nothing very distinctive or personal here," he remarked. "Let us go upstairs."

There were three bedrooms on the upper floor, of which two were evidently disused, though the windows were wide open. The third bedroom showed manifest traces of occupation, though it was as bare as the others, for the water still stood in the wash-hand basin, and the bed was unmade. To the latter Thorndyke advanced, and, having turned back the bedclothes, examined the interior attentively, especially at the foot and the pillow. The latter was soiled—not to say grimy—though the rest of the bed-linen was quite clean.

"Hair-dye," remarked Thorndyke, noting my glance at it; then he turned and looked out of the open window. "Can you see the place where Miss Haldean was sitting to sketch?" he asked.

"Yes," I replied; "there is the place well in view, and you can see right up the road. I had no idea this house stood so high. From the three upper windows you can see all over the country excepting through the wood."

"Yes," Thorndyke rejoined, "and he has probably been in the habit of keeping watch up here with a telescope or a pair of field-glasses. Well, there is not much of interest in this room. He kept his effects in a cabin trunk which stood there under the window. He shaved this morning. He has a white beard, to judge by the stubble on the shaving-paper, and that is all. Wait, though. There is a key hanging on that nail. He must have overlooked that, for it evidently does not belong to this house. It is an ordinary town latchkey."

He took the key down, and having laid a sheet of notepaper, from his pocket, on the dressing-table, produced a pin, with which he began carefully to probe the interior of the key-barrel. Presently there came forth, with much coaxing, a large ball of grey fluff, which Thorndyke folded up in the paper with infinite care.

"I suppose we mustn't take away the key," he said, "but I think we will take a wax mould of it."

He hurried downstairs, and, unstrapping the case from his bicycle, brought it in and placed it on the table. As it was now getting dark, he detached the powerful acetylene lamp from his machine, and, having lighted it, proceeded to open the mysterious case. First he took from it a small insufflator, or powder-blower, with which he blew a cloud of light yellow powder over the table around the remains of the clock. The powder settled on the table in an even coating, but when he blew at it smartly with his breath, it cleared off, leaving, however, a number of smeary impressions which stood out in strong yellow against the black oilcloth. To one of these impressions he pointed significantly. It was the print of a child's hand.

He next produced a small, portable microscope and some glass slides and cover-slips, and having opened the paper and tipped the ball of fluff from the key-barrel on to a slide, set to work with a pair of mounted needles to tease it out into its component parts. Then he turned the light of the lamp on to the microscope mirror and proceeded to examine the specimen.

"A curious and instructive assortment this, Jervis," he remarked, with his eye at the microscope: "woollen fibres—no cotton or linen; he is careful of his health to have woollen pockets—and two hairs; very curious ones, too. Just look at them, and observe the root bulbs."

I applied my eye to the microscope, and saw, among other things, two hairs—originally white, but encrusted with a black, opaque, glistening stain. The root bulbs, I noticed, were shrivelled and atrophied.

"But how on earth," I exclaimed, "did the hairs get into his pocket?"

"I think the hairs themselves answer that question," he replied, "when considered with the other curios. The stain is obviously lead sulphide; but what else do you see?"

"I see some particles of metal—a white metal apparently—and a number of fragments of woody fibre and starch granules, but I don't recognize the starch. It is not wheat-starch, nor rice, nor potato. Do you make out what it is?"



Thorndyke chuckled. "Experientia does it," said he. "You will have, Jervis, to study the minute properties of dust and dirt. Their evidential value is immense. Let us have another look at that starch; it is all alike, I suppose."

It was; and Thorndyke had just ascertained the fact when the door burst open and Mrs. Haldean entered the room, followed by Mrs. Hanshaw and the police inspector. The former lady regarded my colleague with a glance of extreme disfavour.

"We heard that you had come here, sir," said she, "and we supposed you were engaged in searching for my poor child. But it seems we were mistaken, since we find you here amusing yourselves fiddling with these nonsensical instruments."

"Perhaps, Mabel," said Mrs. Hanshaw stiffly, "it would be wiser, and infinitely more polite, to ask if Dr. Thorndyke has any news for us."

"That is undoubtedly so, madam," agreed the inspector, who had apparently suffered also from Mrs. Haldean's impulsiveness.

"Then perhaps," the latter lady suggested, "you will inform us if you have discovered anything."

"I will tell you." replied Thorndyke, "all that we know. The child was abducted by the man who occupied this house, and who appears to have watched him from an upper window, probably through a glass. This man lured the child into the wood by blowing this bird-call; he met him in the wood, and induced him—by some promises, no doubt—to come with him. He picked the child up and carried him—on his back, I think—up to the house, and brought him in through the front door, which he locked after him. He gave the boy this clock and the bird-call to amuse him while he went upstairs and packed his trunk. He took the trunk out through the back door and down the garden to the shed there, in which he had a motor-car. He got the car out and came back for the boy, whom he carried down to the car, locking the back door after him. Then he drove away."

"You know he has gone," cried Mrs. Haldean, "and yet you stay here playing with these ridiculous toys. Why are you not following him?"

"We have just finished ascertaining the facts," Thorndyke replied calmly, "and should by now be on the road if you had not come."

Here the inspector interposed anxiously. "Of course, sir, you can't give any description of the man. You have no clue to his identity, I suppose?"

"We have only his footprints," Thorndyke answered, "and this fluff which I raked out of the barrel of his latchkey, and have just been examining. From these data I conclude that he is a rather short and thin man, and somewhat lame. He walks with the aid of a thick stick, which has a knob, not a crook, at the top, and which he carries in his left hand. I think that his left leg has been amputated above the knee, and that he wears an artificial limb. He is elderly, he shaves his beard, has white hair dyed a greyish black, is partly bald, and probably combs a wisp of hair over the bald place; he takes snuff, and carries a leaden comb in his pocket."

As Thorndyke's description proceeded, the inspector's mouth gradually opened wider and wider, until he appeared the very type and symbol of astonishment. But its effect on Mrs. Haldean was much more remarkable. Rising from her chair, she leaned on the table and stared at Thorndyke with an expression of awe—even of terror; and as he finished she sank back into her chair, with her hands clasped, and turned to Mrs. Hanshaw.

"Jane!" she gasped, "it is Percy—my brother-in-law! He has described him exactly, even to his stick and his pocket-comb. But I thought he was in Chicago."

"If that is so," said Thorndyke, hastily repacking his case, "we had better start at once."

"We have the dogcart in the road," said Mrs. Hanshaw.

"Thank you," replied Thorndyke. "We will ride on our bicycles, and the inspector can borrow Willett's. We go out at the back by the cart-track, which joins the road farther on."

"Then we will follow in the dogcart," said Mrs. Haldean. "Come, Jane."

The two ladies departed down the path, while we made ready our bicycles and lit our lamps.

"With your permission, inspector," said Thorndyke, "we will take the key with us."

"It's hardly legal, sir," objected the officer. "We have no authority."

"It is quite illegal," answered Thorndyke; "but it is necessary; and necessity—like your military J.P.—knows no law."

The inspector grinned and went out, regarding me with a quivering eyelid as Thorndyke locked the door with his skeleton key. As we turned into the road, I saw the light of the dogcart behind us, and we pushed forward at a swift pace, picking up the trail easily on the soft, moist road.

"What beats me," said the inspector confidentially, as we rode along, "is how he knew the man was bald. Was it the footprints or the latchkey? And that comb, too, that was a regular knock-out."

These points were, by now, pretty clear to me. I had seen the hairs with their atrophied bulbs—such as one finds at the margin of a bald patch; and the comb was used, evidently, for the double purpose of keeping the bald patch covered and blackening the sulphur-charged hair. But the knobbed stick and the artificial limb puzzled me so completely that I presently overtook Thorndyke to demand an explanation.

"The stick," said he, "is perfectly simple. The ferrule of a knobbed stick wears evenly all round; that of a crooked stick wears on one side—the side opposite the crook. The impressions showed that the ferrule of this one was evenly convex; therefore it had no crook. The other matter is more complicated. To begin with, an artificial foot makes a very characteristic impression, owing to its purely passive elasticity, as I will show you to-morrow. But an artificial leg fitted below the knee is quite secure, whereas one fitted above the knee—that is, with an artificial knee-joint worked by a spring—is much less reliable. Now, this man had an artificial foot, and he evidently distrusted his knee-joint, as is shown by his steadying it with his stick on the same side. If he had merely had a weak leg, he would have used the stick with his right hand—with the natural swing of the arm, in fact—unless he had been very lame, which he evidently was not. Still, it was only a question of probability, though the probability was very great. Of course, you understand that those particles of woody fibre and starch granules were disintegrated snuff-grains."

This explanation, like the others, was quite simple when one had heard it, though it gave me material for much thought as we pedalled on along the dark road, with Thorndyke's light flickering in front, and the dogcart pattering in our wake. But there was ample time for reflection; for our pace rather precluded conversation, and we rode on, mile after mile, until my legs ached with fatigue. On and on we went through village after village, now losing the trail in some frequented street, but picking it up again unfailingly as we emerged on to the country road, until at last, in the paved High Street of the little town of Horsefield, we lost it for good. We rode on through the town out on to the country road; but although there were several tracks of motors, Thorndyke shook his head at them all. "I have been studying those tyres until I know them by heart," he said. "No; either he is in the town, or he has left it by a side road."

There was nothing for it but to put up the horse and the machines at the hotel, while we walked round to reconnoitre; and this we did, tramping up one street and down another, with eyes bent on the ground, fruitlessly searching for a trace of the missing car.

Suddenly, at the door of a blacksmith's shop, Thorndyke halted. The shop had been kept open late for the shoeing of a carriage horse, which was just being led away, and the smith had come to the door for a breath of air. Thorndyke accosted him genially.

"Good-evening. You are just the man I wanted to see. I have mislaid the address of a friend of mine, who, I think, called on you this afternoon—a lame gentleman who walks with a stick. I expect he wanted you to pick a lock or make him a key."

"Oh, I remember him!" said the man. "Yes, he had lost his latchkey, and wanted the lock picked before he could get into his house. Had to leave his motor-car outside while he came here. But I took some keys round with me, and fitted one to his latch."

He then directed us to a house at the end of a street close by, and, having thanked him, we went off in high spirits.

"How did you know he had been there?" I asked.

"I didn't; but there was the mark of a stick and part of a left foot on the soft earth inside the doorway, and the thing was inherently probable, so I risked a false shot."

The house stood alone at the far end of a straggling street, and was enclosed by a high wall, in which, on the side facing the street, was a door and a wide carriage-gate. Advancing to the former, Thorndyke took from his pocket the purloined key, and tried it in the lock. It fitted perfectly, and when he had turned it and pushed open the door, we entered a small courtyard. Crossing this, we came to the front door of the house, the latch of which fortunately fitted the same key; and this having been opened by Thorndyke, we trooped into the hall. Immediately we heard the sound of an opening door above, and a reedy, nasal voice sang out:

"Hello, there! Who's that below?"

The voice was followed by the appearance of a head projecting over the baluster rail.

"You are Mr. Percy Haldean, I think," said the inspector.

At the mention of this name, the head was withdrawn, and a quick tread was heard, accompanied by the tapping of a stick on the floor. We started to ascend the stairs, the inspector leading, as the authorized official; but we had only gone up a few steps, when a fierce, wiry little man danced out on to the landing, with a thick stick in one hand and a very large revolver in the other.

"Move another step, either of you," he shouted, pointing the weapon at the inspector, "and I let fly; and mind you, when I shoot I hit."



He looked as if he meant it, and we accordingly halted with remarkable suddenness, while the inspector proceeded to parley.

"Now, what's the good of this, Mr. Haldean?" said he. "The game's up, and you know it."

"You clear out of my house, and clear out sharp," was the inhospitable rejoinder, "or you'll give me the trouble of burying you in the garden."

I looked round to consult with Thorndyke, when, to my amazement, I found that he had vanished—apparently through the open hall-door. I was admiring his discretion when the inspector endeavoured to reopen negotiations, but was cut short abruptly.

"I am going to count fifty," said Mr. Haldean, "and if you aren't gone then, I shall shoot."

He began to count deliberately, and the inspector looked round at me in complete bewilderment. The flight of stairs was a long one, and well lighted by gas, so that to rush it was an impossibility. Suddenly my heart gave a bound and I held my breath, for out of an open door behind our quarry, a figure emerged slowly and noiselessly on to the landing. It was Thorndyke, shoeless, and in his shirt-sleeves.

Slowly and with cat-like stealthiness, he crept across the landing until he was within a yard of the unconscious fugitive, and still the nasal voice droned on, monotonously counting out the allotted seconds.

"Forty-one, forty-two, forty-three—"

There was a lightning-like movement—a shout—a flash—a bang—a shower of falling plaster, and then the revolver came clattering down the stairs. The inspector and I rushed up, and in a moment the sharp click of the handcuffs told Mr. Percy Haldean that the game was really up.

* * * * *

Five minutes later Freddy-boy, half asleep, but wholly cheerful, was borne on Thorndyke's shoulders into the private sitting-room of the Black Horse Hotel. A shriek of joy saluted his entrance, and a shower of maternal kisses brought him to the verge of suffocation. Finally, the impulsive Mrs. Haldean, turning suddenly to Thorndyke, seized both his hands, and for a moment I hoped that she was going to kiss him, too. But he was spared, and I have not yet recovered from the disappointment.



III

THE ANTHROPOLOGIST AT LARGE

Thorndyke was not a newspaper reader. He viewed with extreme disfavour all scrappy and miscellaneous forms of literature, which, by presenting a disorderly series of unrelated items of information, tended, as he considered, to destroy the habit of consecutive mental effort.

"It is most important," he once remarked to me, "habitually to pursue a definite train of thought, and to pursue it to a finish, instead of flitting indolently from one uncompleted topic to another, as the newspaper reader is so apt to do. Still, there is no harm in a daily paper—so long as you don't read it."

Accordingly, he patronized a morning paper, and his method of dealing with it was characteristic. The paper was laid on the table after breakfast, together with a blue pencil and a pair of office shears. A preliminary glance through the sheets enabled him to mark with the pencil those paragraphs that were to be read, and these were presently cut out and looked through, after which they were either thrown away or set aside to be pasted in an indexed book.

The whole proceeding occupied, on an average, a quarter of an hour.

On the morning of which I am now speaking he was thus engaged. The pencil had done its work, and the snick of the shears announced the final stage. Presently he paused with a newly-excised cutting between his fingers, and, after glancing at it for a moment, he handed it to me.

"Another art robbery," he remarked. "Mysterious affairs, these—as to motive, I mean. You can't melt down a picture or an ivory carving, and you can't put them on the market as they stand. The very qualities that give them their value make them totally unnegotiable."

"Yet I suppose," said I, "the really inveterate collector—the pottery or stamp maniac, for instance—will buy these contraband goods even though he dare not show them."

"Probably. No doubt the cupiditas habendi, the mere desire to possess, is the motive force rather than any intelligent purpose—"

The discussion was at this point interrupted by a knock at the door, and a moment later my colleague admitted two gentlemen. One of these I recognized as a Mr. Marchmont, a solicitor, for whom we had occasionally acted; the other was a stranger—a typical Hebrew of the blonde type—good-looking, faultlessly dressed, carrying a bandbox, and obviously in a state of the most extreme agitation.

"Good-morning to you, gentlemen," said Mr. Marchmont, shaking hands cordially. "I have brought a client of mine to see you, and when I tell you that his name is Solomon Loewe, it will be unnecessary for me to say what our business is."

"Oddly enough," replied Thorndyke, "we were, at the very moment when you knocked, discussing the bearings of his case."

"It is a horrible affair!" burst in Mr. Loewe. "I am distracted! I am ruined! I am in despair!"

He banged the bandbox down on the table, and flinging himself into a chair, buried his face in his hands.

"Come, come," remonstrated Marchmont, "we must be brave, we must be composed. Tell Dr. Thorndyke your story, and let us hear what he thinks of it."

He leaned back in his chair, and looked at his client with that air of patient fortitude that comes to us all so easily when we contemplate the misfortunes of other people.

"You must help us, sir," exclaimed Loewe, starting up again—"you must, indeed, or I shall go mad. But I shall tell you what has happened, and then you must act at once. Spare no effort and no expense. Money is no object—at least, not in reason," he added, with native caution. He sat down once more, and in perfect English, though with a slight German accent, proceeded volubly: "My brother Isaac is probably known to you by name."

Thorndyke nodded.

"He is a great collector, and to some extent a dealer—that is to say, he makes his hobby a profitable hobby."

"What does he collect?" asked Thorndyke.

"Everything," replied our visitor, flinging his hands apart with a comprehensive gesture—"everything that is precious and beautiful—pictures, ivories, jewels, watches, objects of art and vertu—everything. He is a Jew, and he has that passion for things that are rich and costly that has distinguished our race from the time of my namesake Solomon onwards. His house in Howard Street, Piccadilly, is at once a museum and an art gallery. The rooms are filled with cases of gems, of antique jewellery, of coins and historic relics—some of priceless value—and the walls are covered with paintings, every one of which is a masterpiece. There is a fine collection of ancient weapons and armour, both European and Oriental; rare books, manuscripts, papyri, and valuable antiquities from Egypt, Assyria, Cyprus, and elsewhere. You see, his taste is quite catholic, and his knowledge of rare and curious things is probably greater than that of any other living man. He is never mistaken. No forgery deceives him, and hence the great prices that he obtains; for a work of art purchased from Isaac Loewe is a work certified as genuine beyond all cavil."

He paused to mop his face with a silk handkerchief, and then, with the same plaintive volubility, continued:

"My brother is unmarried. He lives for his collection, and he lives with it. The house is not a very large one, and the collection takes up most of it; but he keeps a suite of rooms for his own occupation, and has two servants—a man and wife—to look after him. The man, who is a retired police sergeant, acts as caretaker and watchman; the woman as housekeeper and cook, if required, but my brother lives largely at his club. And now I come to this present catastrophe."

He ran his fingers through his hair, took a deep breath, and continued:

"Yesterday morning Isaac started for Florence by way of Paris, but his route was not certain, and he intended to break his journey at various points as circumstances determined. Before leaving, he put his collection in my charge, and it was arranged that I should occupy his rooms in his absence. Accordingly, I sent my things round and took possession.

"Now, Dr. Thorndyke, I am closely connected with the drama, and it is my custom to spend my evenings at my club, of which most of the members are actors. Consequently, I am rather late in my habits; but last night I was earlier than usual in leaving my club, for I started for my brother's house before half-past twelve. I felt, as you may suppose, the responsibility of the great charge I had undertaken; and you may, therefore, imagine my horror, my consternation, my despair, when, on letting myself in with my latchkey, I found a police-inspector, a sergeant, and a constable in the hall. There had been a robbery, sir, in my brief absence, and the account that the inspector gave of the affair was briefly this:

"While taking the round of his district, he had noticed an empty hansom proceeding in leisurely fashion along Howard Street. There was nothing remarkable in this, but when, about ten minutes later, he was returning, and met a hansom, which he believed to be the same, proceeding along the same street in the same direction, and at the same easy pace, the circumstance struck him as odd, and he made a note of the number of the cab in his pocket-book. It was 72,863, and the time was 11.35.

"At 11.45 a constable coming up Howard Street noticed a hansom standing opposite the door of my brother's house, and, while he was looking at it, a man came out of the house carrying something, which he put in the cab. On this the constable quickened his pace, and when the man returned to the house and reappeared carrying what looked like a portmanteau, and closing the door softly behind him, the policeman's suspicions were aroused, and he hurried forward, hailing the cabman to stop.

"The man put his burden into the cab, and sprang in himself. The cabman lashed his horse, which started off at a gallop, and the policeman broke into a run, blowing his whistle and flashing his lantern on to the cab. He followed it round the two turnings into Albemarle Street, and was just in time to see it turn into Piccadilly, where, of course, it was lost. However, he managed to note the number of the cab, which was 72,863, and he describes the man as short and thick-set, and thinks he was not wearing any hat.

"As he was returning, he met the inspector and the sergeant, who had heard the whistle, and on his report the three officers hurried to the house, where they knocked and rang for some minutes without any result. Being now more than suspicious, they went to the back of the house, through the mews, where, with great difficulty, they managed to force a window and effect an entrance into the house.

"Here their suspicions were soon changed to certainty, for, on reaching the first-floor, they heard strange muffled groans proceeding from one of the rooms, the door of which was locked, though the key had not been removed. They opened the door, and found the caretaker and his wife sitting on the floor, with their backs against the wall. Both were bound hand and foot, and the head of each was enveloped in a green-baize bag; and when the bags were taken off, each was found to be lightly but effectively gagged.

"Each told the same story. The caretaker, fancying he heard a noise, armed himself with a truncheon, and came downstairs to the first-floor, where he found the door of one of the rooms open, and a light burning inside. He stepped on tiptoe to the open door, and was peering in, when he was seized from behind, half suffocated by a pad held over his mouth, pinioned, gagged, and blindfolded with the bag.

"His assailant—whom he never saw—was amazingly strong and skilful, and handled him with perfect ease, although he—the caretaker—is a powerful man, and a good boxer and wrestler. The same thing happened to the wife, who had come down to look for her husband. She walked into the same trap, and was gagged, pinioned, and blindfolded without ever having soon the robber. So the only description that we have of this villain is that furnished by the constable."

"And the caretaker had no chance of using his truncheon?" said Thorndyke.

"Well, he got in one backhanded blow over his right shoulder, which he thinks caught the burglar in the face; but the fellow caught him by the elbow, and gave his arm such a twist that he dropped the truncheon on the floor."

"Is the robbery a very extensive one?"

"Ah!" exclaimed Mr. Loewe, "that is just what we cannot say. But I fear it is. It seems that my brother had quite recently drawn out of his bank four thousand pounds in notes and gold. These little transactions are often carried out in cash rather than by cheque"—here I caught a twinkle in Thorndyke's eve—"and the caretaker says that a few days ago Isaac brought home several parcels, which were put away temporarily in a strong cupboard. He seemed to be very pleased with his new acquisitions, and gave the caretaker to understand that they were of extraordinary rarity and value.

"Now, this cupboard has been cleared out. Not a vestige is left in it but the wrappings of the parcels, so, although nothing else has been touched, it is pretty clear that goods to the value of four thousand pounds have been taken; but when we consider what an excellent buyer my brother is, it becomes highly probable that the actual value of those things is two or three times that amount, or even more. It is a dreadful, dreadful business, and Isaac will hold me responsible for it all."

"Is there no further clue?" asked Thorndyke. "What about the cab, for instance?"

"Oh, the cab," groaned Loewe—"that clue failed. The police must have mistaken the number. They telephoned immediately to all the police stations, and a watch was set, with the result that number 72,863 was stopped as it was going home for the night. But it then turned out that the cab had not been off the rank since eleven o'clock, and the driver had been in the shelter all the time with several other men. But there is a clue; I have it here."

Mr. Loewe's face brightened for once as he reached out for the bandbox.

"The houses in Howard Street," he explained, as he untied the fastening, "have small balconies to the first-floor windows at the back. Now, the thief entered by one of these windows, having climbed up a rain-water pipe to the balcony. It was a gusty night, as you will remember, and this morning, as I was leaving the house, the butler next door called to me and gave me this; he had found it lying in the balcony of his house."

He opened the bandbox with a flourish, and brought forth a rather shabby billycock hat.

"I understand," said he, "that by examining a hat it is possible to deduce from it, not only the bodily characteristics of the wearer, but also his mental and moral qualities, his state of health, his pecuniary position, his past history, and even his domestic relations and the peculiarities of his place of abode. Am I right in this supposition?"

The ghost of a smile flitted across Thorndyke's face as he laid the hat upon the remains of the newspaper. "We must not expect too much," he observed. "Hats, as you know, have a way of changing owners. Your own hat, for instance" (a very spruce, hard felt), "is a new one, I think."

"Got it last week," said Mr. Loewe.

"Exactly. It is an expensive hat, by Lincoln and Bennett, and I see you have judiciously written your name in indelible marking-ink on the lining. Now, a new hat suggests a discarded predecessor. What do you do with your old hats?"

"My man has them, but they don't fit him. I suppose he sells them or gives them away."

"Very well. Now, a good hat like yours has a long life, and remains serviceable long after it has become shabby; and the probability is that many of your hats pass from owner to owner; from you to the shabby-genteel, and from them to the shabby ungenteel. And it is a fair assumption that there are, at this moment, an appreciable number of tramps and casuals wearing hats by Lincoln and Bennett, marked in indelible ink with the name S. Loewe; and anyone who should examine those hats, as you suggest, might draw some very misleading deductions as to the personal habits of S. Loewe."

Mr. Marchmont chuckled audibly, and then, remembering the gravity of the occasion, suddenly became portentously solemn.

"So you think that the hat is of no use, after all?" said Mr. Loewe, in a tone of deep disappointment.

"I won't say that," replied Thorndyke. "We may learn something from it. Leave it with me, at any rate; but you must let the police know that I have it. They will want to see it, of course."

"And you will try to get those things, won't you?" pleaded Loewe.

"I will think over the case. But you understand, or Mr. Marchmont does, that this is hardly in my province. I am a medical jurist, and this is not a medico-legal case."

"Just what I told him," said Marchmont. "But you will do me a great kindness if you will look into the matter. Make it a medico-legal case," he added persuasively.

Thorndyke repeated his promise, and the two men took their departure.

For some time after they had left, my colleague remained silent, regarding the hat with a quizzical smile. "It is like a game of forfeits," he remarked at length, "and we have to find the owner of 'this very pretty thing.'" He lifted it with a pair of forceps into a better light, and began to look at it more closely.

"Perhaps," said he, "we have done Mr. Loewe an injustice, after all. This is certainly a very remarkable hat."

"It is as round as a basin," I exclaimed. "Why, the fellow's head must have been turned in a lathe!"

Thorndyke laughed. "The point," said he, "is this. This is a hard hat, and so must have fitted fairly, or it could not have been worn; and it was a cheap hat, and so was not made to measure. But a man with a head that shape has got to come to a clear understanding with his hat. No ordinary hat would go on at all.

"Now, you see what he has done—no doubt on the advice of some friendly hatter. He has bought a hat of a suitable size, and he has made it hot—probably steamed it. Then he has jammed it, while still hot and soft, on to his head, and allowed it to cool and set before removing it. That is evident from the distortion of the brim. The important corollary is, that this hat fits his head exactly—is, in fact, a perfect mould of it; and this fact, together with the cheap quality of the hat, furnishes the further corollary that it has probably only had a single owner.

"And now let us turn it over and look at the outside. You notice at once the absence of old dust. Allowing for the circumstance that it had been out all night, it is decidedly clean. Its owner has been in the habit of brushing it, and is therefore presumably a decent, orderly man. But if you look at it in a good light, you see a kind of bloom on the felt, and through this lens you can make out particles of a fine white powder which has worked into the surface."

He handed me his lens, through which I could distinctly see the particles to which he referred.

"Then," he continued, "under the curl of the brim and in the folds of the hatband, where the brush has not been able to reach it, the powder has collected quite thickly, and we can see that it is a very fine powder, and very white, like flour. What do you make of that?"

"I should say that it is connected with some industry. He may be engaged in some factory or works, or, at any rate, may live near a factory, and have to pass it frequently."