"Good heavens!" I cried—"and did any one knock?"

"No one; but about half an hour later Sir Burnham came and released him. Mr. Hardacre was unspeakably distressed to observe that Sir Burnham looked white and ill; in fact, in Mr. Hardacre's own words, five years older! Again, quite by accident, on the same night, he came upon his host kneeling in the chapel—in those days it still boasted a roof—deep in prayer. An atmosphere of indescribable horror, he declared, had settled upon Friar's Park, and although, as he confessed, he had no evidence to prove the correctness of his theory, he nevertheless traced this to the person of the mortgagee. For it seemed to correspond roughly with the appearance in the neighborhood of this man—whom he now met for the first time."

Again Gatton paused, taking out his pipe and pouch, and:

"Who was this person?" I asked.

"A certain Dr. Damar Greefe!"

"Good God!" I cried—"where is all this leading us, Gatton?"

"It is leading us slowly to the truth, Mr. Addison, and that truth, when we come to it, is going to be more horrible than we even suspect. Passing over much of Mr. Hardacre's evidence, I come to the death, in Switzerland, of Mr. Roger Coverly, under circumstances so obscure that I fear we shall never know the particulars. Of one thing, however, I am assured: there was foul play."

"You mean that Roger Coverly was—murdered?"

"I really don't doubt it," replied Gatton, who, having filled his pipe, now lighted it. "I believe he was the first victim."

"The first victim?"

"Mr. Addison, I agree with the late Sir Burnham's solicitor, that the spider at the heart of this web is Dr. Damar Greefe. The shock of his son's premature death led to a collapse from which Sir Burnham never recovered, and Friar's Park entered upon the final phase during which it was occupied by Lady Burnham who seems to have been wholly under the influence of this Eurasian doctor."

"But, my dear Gatton!" I cried—"where is Lady Burnham?"

"In my opinion, dead!" he answered solemnly. "Oh, it sounds preposterous, but in the case of this lonely woman who had apparently no living relatives and who was estranged from Sir Marcus and the other members of her husband's family, it was no very difficult matter to hush up the fact of her death."

"But, Gatton, you don't mean that she, too, met with foul play?"

"Most certainly I don't! It is as clear as day that the whole object of this elaborate secrecy was to hide the fact of her death! She was infinitely more useful alive than dead, Mr. Addison; and they hoped to keep up the solemn farce until—"

"Yes?"

"Until Sir Eric was hanged for the murder of his cousin!"

"Gatton! What do you mean?"

"He is the last of the Coverlys!" answered Gatton simply. "There would be no further danger of any one paying off the mortgage."

"Danger?"

"Exactly. There is some secret at Friar's Park—or at the Bell House—which necessitates the property remaining in the possession of Dr. Damar Greefe—as it has virtually remained since Sir Burnham's death! So much is clear, and although Eric Coverly has persisted in his obstinate silence, one of my assistants who has been at work on the late Sir Marcus's papers made a discovery yesterday, which together with what I had learned from Mr. Hardacre and your code message, brought me down to Crossleys post haste."

"What was this discovery?"

"An invitation from Dr. Damar Greefe, dated only a short time after the death of Sir Burnham, to Sir Marcus, asking him to visit Friar's Park! The doctor explained that the state of Lady Coverly's health made it impossible for her to entertain, but he assured Sir Marcus that she was anxious to see him and to heal any breach which might exist between them. Most significant of all, the Eurasian proposed that Sir Marcus should put up here!"

"At the Abbey Inn?"

"Exactly. Now the 'best room' of the inn is that which you have been occupying—and it is that which Sir Marcus would have occupied had he accepted the doctor's invitation. Listen then: all these clews seemed to point to Friar's Park, but the receipt of your message mentioning one Damar Greefe as being a suspicious party, and asking me to look up his record, quite tipped the scales. I saw, frankly, that you had made a false move, but nevertheless it served my purpose, and I determined to look into the Crossleys end of the inquiry personally, without giving Dr. Damar Greefe reason to suspect that I was in any way associated with the matter.

"I picked up one or two hints from the county police as to the geography as well as the 'notables' of the neighborhood; and the plan which you put into execution to-night, I had adopted last night!"

"What! You visited Friar's Park?"

"I did. But I did not enter through the French window. It never occurred to me that it would be unfastened! I had come provided with a neat set of burglars' tools (and a warrant for use if necessary) and I broke into the kitchen! I found, as you afterwards found, that the place had obviously been deserted for a long time. I was badly puzzled. But my search was more detailed than yours. I climbed up to the top of the tower!"

"To the top of the tower!"

"Yes. I'll tell you what I found there in a minute. But, briefly, beyond learning that the story of the invalid Lady Coverly was a myth, I discovered nothing likely to help the inquiry. I seriously debated the idea of putting Dr. Damar Greefe under arrest; but finally I determined to watch him for a time without showing my hand. I had the good fortune to meet him this morning here at the Abbey Inn! Also, I saw your mysterious lady visitor! Lastly, I got into conversation with the man, Hawkins, who was accompanied by your friend, the mute!

"Leaving this dangerous pair, I made a rush for the Bell House, thinking I saw my opportunity to examine it unmolested. I was too late, though. One of my assistants warned me of the Eurasian's return just as I was about to enter.

"I watched the house all day. But it was not until some time after dusk that the Eurasian came out. He went to Friar's Park—and I followed him!"

"What! You were there to-night!"

"I was! I dogged Dr. Damar Greefe, determined to learn the nature of the business which brought him to Friar's Park at such an hour. I may add that it was only by the merest accident or good luck that I fathomed it after all. I had no idea into what part of the building he had gone, but, knowing that he was somewhere inside, I watched from the shrubbery. In fact, I was still in the grounds when you arrived!"

"Then it was you I saw on the tower!"

"Oh, no, it was not! I had thoroughly examined the tower on my previous visit, and what I found there had puzzled me badly. In fact it was not until your admirable withdrawal from Friar's Park to-night that the horrible explanation dawned upon me ...and I realized that the object of inviting Sir Marcus to Upper Crossleys was to 'remove' him! The first plan failed, of course; he never came. He went back again on duty to Russia, I believe—for a time. But when he returned—a second was adopted, at the Red House. However—the murder-machine erected in accordance with the earlier plan was still there—"

"Where?" I cried in bewilderment.

"On the tower of Friar's Park! It was the appearance of Damar Greefe on the platform of the tower, armed with binoculars, which awakened me to the ghastly truth. The device, never used in the case of Sir Marcus, was not to be wasted, but was to be employed to remove a dangerous obstacle from the conspirator's path! I had left the car near Crossleys, you see, and never in my life have I run as I ran after you to-night!"

"But, Gatton, what did you find on the tower—and what connection exists between the tower and the explosion which occurred here to-night?"

"This: a sort of small howitzer—I think of Krupp's manufacture, but you would be better able to judge than I—is mounted on the platform of the tower! I examined it, Mr. Addison, last night, and like a fool concluded that it had been used at some time for a local celebration and never dismounted! It was trained—as I remembered nearly too late—and laid at a certain elevation in such a way that it was evidently never meant to be moved. Yet at the time the significance of this did not strike me. How the range was found so exactly we shall probably never know; but the truth suddenly burst upon me as you made off through the bushes and as Dr. Damar Greefe came out and began to peer through his glasses—that it was mechanically set in such a manner that it could drop a projectile into the window above the porch of the Abbey Inn!"

"Good God! It's hardly credible!"

"It isn't, I admit. But weather conditions favored him; there wasn't a breath of wind. And that he succeeded is proved by the fact that at the present moment your room below is probably still full of poison gas! Of course, it may not have been a gas-shell; he may have relied, as well he might do, on the burst! But I'm taking no chances. You can well imagine that failing a knowledge of the arrangement on the tower, no explanation of the mystery would ever have been found! A thunder-bolt would be the popular theory, and if any fragments of shell were found who would ever know from where it had been fired?"

"Gatton," I said, "I owe you my life. But why did this fiend try to murder me?"

Gatton smiled.

"I have a theory, Mr. Addison," he replied, "and it is this: I believe he thought that the indiscretion of a certain mysterious lady would bring about his ruin. If I am not mistaken, she has already gone far to put his neck in a halter; and he was determined to nip this latest adventure in the bud by removing the object of her—"

I felt myself changing color, and:

"For heaven's sake say no more!" I interrupted. "It is a gruesome and horrible thought! Yet, perhaps you are right. What must we do, Gatton? These people have rendered the neighborhood uninhabitable for themselves, now, and—"

Dimly to my ears came the sound of a gun-shot.

"And have fled!" cried Gatton, springing up. "Quick! we must chance the gas!"

"Why? What was that shot?"

"A signal! Dr. Damar Greefe and 'the cat' have escaped!"

He raced out across the landing, amid a chorus of frightened inquiries from the inn staff. I followed him into a front room, and:

"This comes of turning my attention elsewhere for half an hour!" he cried angrily. "I seem to be cursed with fools for assistants!"

Throwing up the window, he leaned out. I stood at his elbow; and as I looked I saw a great red glow rising from the distant woods. The sound of a car approaching at headlong speed reached my ears, and at the same moment I saw the headlights.

"Hullo, there!" cried Gatton. "Blythe! Petersham!"

The car stopped, and a cry came back:

"We've lost him, sir!... and the Bell House is in flames!"



CHAPTER XXI

IN LONDON AGAIN

"Then the sudden change in the police attitude towards Eric," said Isobel, "is not due to any discoveries which you or Inspector Gatton have made at Friar's Park?"

"That I cannot say," I replied. "We have made certain discoveries as I have already told you, but whilst they distinctly point to some criminal whose identity is not yet fully established, unfortunately I cannot say that in a legal sense they clear Coverly."

Isobel, as I had thought at the first moment of our meeting, looked very tired and had that pathetic expression of appeal in her eyes which had hurt me so much when first it had appeared there on the morning after the tragedy. She was palpably ill at ease, and I had small cause to wonder at this. Although a veiled paragraph (in which I thought I could detect the hand of Gatton) had appeared in the press on the previous day, briefly stating that evidence had been volunteered by Sir Eric Coverly which had led to an entirely new line of police inquiry, the item of news—which had naturally excited wide-spread interest—had never been amplified. Amid the alarms and excursions which had terminated my visit to Upper Crossleys, Gatton I supposed had forgotten to refer to this matter; but I did not doubt that the paragraph was an inspired one issued from Scotland Yard.

My friend's object in circulating this statement was not by any means evident to me, but as I expected to see him later that day I hoped to be able to obtain from him some explanation of his new tactics.

Many hours had elapsed since, with the flames of the burning Bell House reddening the night behind me, and throwing into lurid relief the fir-groves surrounding Dr. Damar Greefe's mysterious stronghold, I had been borne along the road towards London. That Gatton had hoped for much from a detailed search of the Eurasian's establishment, I knew, for I had not forgotten his anger at the appearance of the flames above the tree tops which had told of the foiling of his plans.

Under cover of the conflagration the cunning Eurasian had escaped. Every possible means had been taken to intercept him, and whilst Gatton, inspired by I know not what hopes, had hastened to the burning Bell House, I had set out in the police car in pursuit of Dr. Damar Greefe accompanied by Detective-Sergeant Blythe—upon whom, apparently, the onus of the fiasco rested.

In despite of these measures, the hunted man had made good his retreat; and Blythe and I had entered the outskirts of London without once sighting the car in which Dannar Greefe had fled.

No communication reached me on the following morning, and I found myself, consumed with impatient curiosity, temporarily out of touch with Gatton. Then, shortly after mid-day, came a telegram:

"Endeavor induce Sir Eric come to your house eight to-night. Will meet him there. Gatton."

Welcoming any ground for action—since to remain passive at such a time was torture—I called at once at Coverly's chambers. He was out. But I left an urgent written message for him, and in the hope of finding him with Isobel, hurried to her flat. He had not been there that day, however; and now I could only hope that he would return to his rooms in time to keep the appointment. For that Gatton had some good reason for suggesting the meeting I did not doubt.

Gatton and I were now agreed that Dr. Damar Greefe, if not directly responsible for the death of Sir Marcus, at least had been an accessory to his murder. At any rate he had shown his hand; firstly, in the attempted assault upon myself by his Nubian servant and secondly, by the devilish device whereby he had propelled some sort of gas projectile (for this we now knew it to have been) from the tower of Friar's Park into my room at the Abbey Inn. I had, then, become obnoxious to him; he evidently regarded my continued existence as a menace to his own.

Two explanations of his attitude presented themselves: one, that my inquiries had led me daily nearer to the heart of the mystery; or, two, that the doctor's mysterious associate, the possessor of the green eyes, had adopted an attitude towards myself which the Eurasian had counted sooner or later as certain to compromise him. In short, whilst it was sufficiently evident to me that these mysterious people residing at Upper Crossleys were the criminals for whom New Scotland Yard was searching, no definite link between their admittedly dangerous activities and the crime we sought to unravel, had yet been brought to light.

On the other hand, whilst it was not feasible to suppose that any relationship existed between Sir Eric, the new baronet, and the Eurasian, or the woman associated with the Eurasian, I was quite well aware that, equally, there was no evidence to show that such an association did not exist.

I longed to be able to offer some consolation to Isobel, who at this time was passing through days and nights of dreadful apprehension; but beyond imparting to her some of my own personal convictions, I was unable to say honestly that the complicity of Coverly in the murder was definitely and legally disproved.

"If only he would break his absurd silence," she said suddenly. "This ridiculous suspicion which still seems to be entertained in some quarters would be removed of course; but his every act since the night of the tragedy has only intensified it."

She sat facing me on the settee, her hands locked in her lap, and:

"Do you refer to any new act of his," I asked, "with which I am not at present acquainted?"

She nodded slowly.

"Yes," she said; "but I can only tell you in confidence, for it is something which Inspector Gatton does not know."

"Please tell me," I urged; "for you are aware that I have no other object but the clearing of Coverly in the eyes of the police and the public."

"Well," she continued, with hesitation, "last night he lodged with me a copy of a declaration which he assured me cleared him entirely. But he imposed an extraordinary condition."

"What was that?" I asked with interest.

"It was only to be used in the event of the worst happening!" she said.

"What do you mean? In the event of his being put on trial for murder?"

Isobel nodded.

"I suppose so," she said sadly; "it seems madness, doesn't it?"

"Absolute madness!" I agreed. "If he is in a position to establish an alibi why not do it now and be done with the whole unsavory business?"

"That is exactly what I pointed out to him, but he was adamant on the matter and became dreadfully irritable and excited. I did not dare to press the point, so of course—" She shrugged her shoulders resignedly.

Was it a selfish joy, I wonder, which possessed me as I noted the restrained impatience with which Isobel spoke of Coverly? I suppose it was, and perhaps it was even indefensible; yet I record it, desiring to be perfectly honest with myself and with others. Nevertheless, in the near future I was to regret the sentiments which at that moment I entertained towards Coverly. But how was I to know in my poor human blindness that his innocence would soon be established in the eyes of the world by other means than the publication of the statement which he had so strangely placed with Isobel?

Since, excepting the telegram, no communication had reached me from Gatton, I could only assume that he had discovered nothing in the ruins of the Bell House of sufficient importance to justify a report. Doubtless he had reported to New Scotland Yard, but that his discoveries, if any, had not resulted in an arrest, was painfully evident.

My latest contribution to the Planet had been in the nature of a discursive essay rather than an informative article, although I had enlivened it with some account of my experiences at Upper Crossleys. But at the moment that I had set pen to paper I had realized the difficulty of expressing, within the scope of a newspaper contribution, the peculiar conditions which ruled in that oddly deserted village. And at Gatton's request I had been most guarded in my treatment of the two abortive attempts made upon my own life by the Eurasian doctor.

The appeal in Isobel's eyes, as I have said, was very difficult to resist, but after all I had little substantial consolation to offer; and in the circumstances I shall be understood, I think, when I say that it was with an odd sense of relief that I finally took my departure from her flat. To long for the right to comfort a woman as only a lover may do, and to suspect that this sweet privilege might have been his for the asking, is a torture which no man can suffer unmoved.

Anticipating, almost hourly, a further message from Gatton, I went first to the Planet offices, but although I lunched at the club and returned later, no news reached me there; whereupon, I proceeded to my cottage. As I walked down the high-street of the onetime village, passing that police-box at which (so far as my part in it was concerned) the first scenes of the drama actually had been laid, I was seized with wonder on reflecting that all these episodes, strange and tragic, had been crowded into so short a space of time.

An officer was on duty there as on the night when I had first made acquaintance with the green eyes of the woman of mystery; but I did not know the man and I walked on deep in meditation, until, arriving at the Red House, other and dreadful reflections were aroused by the sight of that deserted building.

There were no spectators to-day, for the first excitement aroused by the crime had begun to subside, and I did not even notice a constable posted there. Whereby I concluded that the investigations at the Red House had been terminated and that no more was hoped for from an examination of those premises.

Coates was awaiting me as I entered my cottage with the news that Inspector Gatton had telephoned an hour before from Crossleys, confirming his telegram and stating that he would call immediately he arrived in London. This was stimulating, and I only regretted that I had not been at home personally to speak to him. Then:

"Sir Eric Coverly also rang up, sir," continued Coates, "at about three o'clock and said that he would be calling this evening at eight in accordance with your request."

I looked at the military figure standing bolt upright just within the doorway.

"Good. Is that all?" I asked.

"That was all the message, sir," he reported.

I walked into the study in a very thoughtful mood, and from the open window contemplated that prospect of tree-lined road, now for ever to be associated in my mind with the darkest places in the tragedy in which I had so strangely become involved.

Gatton, I knew, entertained a theory that the selection of the Red House for the dreadful purpose for which it had been employed, was not the result of any mere accident, but was ascribable to the fact that the place was conveniently situated from the point of view of the assassin. In short, he had an idea that the London headquarters of the wanted man, whom we had now definitely invested with the personality of Dr. Damar Greefe, was somewhere within my immediate neighborhood!

It was a startling conclusion and one which rested, as I thought, upon somewhat slender premises; but nevertheless I found it disquieting. And recognizing how the more sinister manifestations of that singular green-eyed creature (whom I could never think of as a woman, nor indeed regard as anything quite human) were associated with darkness—a significantly feline trait—I confess to a certain apprehension respecting the coming night. This apprehension was strengthened no doubt by my memories of Gatton's last words as I had been on the point of setting out from Upper Crossleys.

"With their Friar's Park base destroyed, Mr. Addison," he had said, "they will be forced to fly to that other abode, at present unknown, from which I believe they conducted the elaborate assassination of Sir Marcus. The only alternative is flight from the country, and the mechanism of the C.I.D. having been put into motion, this we may regard as almost impossible—especially in view of the marked personality of Dr. Damar Greefe. Of course," he had added, "they may have some other residence of which we know nothing but I incline to the idea that they will make for London."

That the published paragraph relating to Eric Coverly's alleged evidence was in some way associated with this theory of Gatton's I knew, but of the soundness of his theory I had yet to learn.

Since (as Isobel had that day informed me) the document lodged with her was a profound secret from all, Carton's inspired paragraph could have been no more than a shot in the dark; and the fact that it had hit the mark one of those seeming coincidences which sometimes rest upon mere chance, but which rested, in this case upon a process of careful reasoning. The Inspector was certain, as I was certain, of Coverly's innocence, and he had credited him with an alibi because he knew that if he would but consent to break his inexplicable silence, he was in a position to establish one. Why he had forestalled Coverly I knew not.

I made a poor and hasty dinner, for I was too excited to eat, and returning to the study, I crossed to the bookcase and took down Maspero's "Egyptian Art." I idly glanced again through those passages which Gatton had copied into his note-book—the passages relating to the attributes of Bast, the cat-goddess. My mind rested particularly, I remember, upon the line, "she plays with her victim as with a mouse."

Stifling a somewhat weary sigh, I returned the book to its place and lingered looking out of the open window into the deepening dusk. Mentally my mood was a restless one, but it did not reflect itself physically; for I stood there leaning against the window whilst a procession of all the figures associated with the "Oritoga mystery" raced through my mind.

And presently as I stood there contemplating a mental image of the Eurasian doctor, I heard the telephone bell ring. The sound aroused me in a moment, and walking out into the little ante-room in which the instrument was placed, I took it up—anticipating Coates, who had immediately come in from the garden where he was engaged at the time.

"Hello!" I said.

A voice with which I was unfamiliar, a man's voice speaking rather thickly, replied:

"Is that Mr. Addison?"

"Yes."

"I have just arrived from Crossleys with Inspector Gatton. He requests me to ask you to meet him by the police-box at the corner of the high street immediately."

"Very good," I said. "I will come."

"And," continued the voice—"could you spare Coates with the car for an hour?"

"Certainly," I replied. "For what do you want him?"

"If he will take the car to Denmark Hill Station and be there by a quarter past eight," continued the voice, "Detective-Sergeant Blythe will meet him. There is a large box," he added, "which Inspector Gatton wishes to have taken to your house."

"Very well," I said. "Coates will start in ten minutes' time, and I will come along immediately to meet Inspector Gatton."

I replaced the telephone upon the little table and went out into the garden, whither my man had returned.

"Coates," I said, "get out the Rover."

Coates immediately ceased his gardening operations and stood upright in an attitude of attention.

"Very good, sir."

"You will just have time to get ready at the garage and return here to admit Sir Eric Coverly at eight o'clock. I am going out, now, to meet Inspector Gatton. But inform Sir Eric that I shall be back in a few minutes. Show him into the study and make him comfortable. You will then proceed in the Rover to Denmark Hill Station. You will meet there a man with a box—a detective from Scotland Yard who will make himself known to you. His name is Blythe. You have to bring the box back here."

"Very good, sir," repeated Coates.

And as he entered the house he was already stripping off the old shooting jacket which he wore in the garden. For my part I slipped a light top-coat over my somewhat untidy house attire, and taking my hat and a stick, stepped quickly out along the road in the direction of the village street. A brisk walk brought me to the little sentry-box under the trees. But Gatton was not to be seen. Indeed, with the exception of several ordinary pedestrians who were obviously returning from the city to their homes (all of whom I scrutinized, thinking that Coverly might come this way) and the constable on duty at the point, there was no one about who looked in the least like either of my expected visitors.

Having waited for some ten minutes unavailingly, I spoke to the man in the box.

"Good evening, constable," I said; "I expected to meet a friend here—Inspector Gatton, of Scotland Yard—you may know him?"

"I know of him quite well, sir," answered the constable, "and should recognize him if I saw him. But he has not been here this evening."

"You have seen no one hanging about who might have been sent by him?"

"No one, sir."

"Strange," I muttered; then: "My name is Addison, constable," I said, "and if any one should ask for me will you direct him to proceed to my house?" And I gave the man instructions respecting its whereabouts.

"I will," answered the constable; and wishing him "good night," I retraced my steps, curious respecting the matter, but not apprehensive as I well might have been—and with no glimmering of the ghastly truth penetrating to my mind.



CHAPTER XXII

THE GRAY MIST

I was about half-way on my return journey when I heard a car racing along the road behind me, and as it came nearer I detected the fact that it was slowing down. Ere I could turn:

"Hi! Mr. Addison!" hailed a voice.

I stopped, turned round, and there was Gatton leaning out of the car and staring towards me through the deepening dusk.

"Why, Gatton!" I said, walking up to him—"I waited more than ten minutes for you, and then gave it up."

"Waited for me?"

"Yes, by the police-box."

He stared in evident wonder at me and then at the police chauffeur who drove the car.

"Whatever prompted you to do that?" he said. "Coates must have given you the wrong message. I said I would come to the house for you, not meet you in the street."

Still I remained dense to the truth, and:

"I know you did," I replied. "I refer to the second message."

"I sent no second message."

"What!"

"Get in," cried Gatton shortly; "this wants explaining."

I stepped into the car, and as it moved onward again I explained to the Inspector what had taken place. As I talked I saw his expression grow darker and darker, until finally:

"There's something wrong!" he muttered.

"Then you did not inspire the message?"

"I know nothing whatever about it. At the time you received it I was on my way from Crossleys. I have been traveling for the last hour and a half."

I stared at him very blankly. The object of such a communication was difficult to imagine, and I knew of nothing incriminating in my possession, which might have tempted the assassin to lure me from the house whilst he obtained possession of it.

In ever-growing excitement I watched the houses slipping behind us as we swept along. Then we came to the tree-lined expanse of road immediately leading to the cottage. As the car stopped, I leaped out quickly, Gatton close upon my heels, and ran up the path to the door.

From certain indications with which I was familiar, I observed that Coates was out, whereby I concluded that he had set off to meet the mythical "man with a box." Not without apprehension I inserted the key in the lock and opened the door.

As I did so, I beheld a most singular spectacle.

The careful Coates had closed all the windows as usual before quitting the house, so that there was comparatively little draught along the corridor. But as the door swung open I perceived a sort of gray fog-like vapor floating over the carpet about a foot in depth and moving in slightly sinuous spirals upward towards the opened door!

At this phenomenon I stared in speechless astonishment; for whilst it resembled steam or the early morning mist which one sometimes sees upon the grass in hot weather, I was wholly at a loss to account for its presence inside my cottage!

"Good heavens!" cried Gatton, and grasped me by the arm with so strong a grip that I almost cried out. "Look! Look!"

"What the devil is it?" I muttered; and turning, I stared into his face. "What can it be?"

"Stand back," he said strangely, and pulled me out into the porch. "Do you notice a peculiar smell?"

"I do—a most foul and abominable smell."

Gatton nodded grimly.

"God knows what has happened here since you left," he said; "but of one thing I am sure—you must certainly bear a charmed life, Mr. Addison. There has been a third attempt at your removal!"

This choking smell which now rose to my nostrils had in it something vaguely familiar, yet something which at that place and that time I found myself unable to identify; but:

"We shall have to open the windows!" rapped Gatton.

Suiting the action to the word, he took out his handkerchief, and holding it to his nostrils went running along the corridor, his feet oddly enveloped in that mysterious mist. A moment later I heard the bang of a swiftly raised window, then another, and:

"Stand clear of the door!" called a muffled voice.

A moment later Gatton came racing back again, coughing and choking because of the fumes which arose from that supernatural fog carpeting the passages.

The chauffeur now appeared upon the path leading from the gate to the porch, but:

"Stay by the car!" ordered Gatton. "Don't move without instructions."

I scarcely noted his words. For I was watching the gray fog. In the dusk I could see it streaming out, that deathly mist, and creeping away across grass and flower-beds, right and left of the door.

"Give it a chance to clear," said Gatton; "I fancy one good whiff would finish any man!"

Even as he spoke the words the nature of this vapor suddenly occurred to me, and:

"The Abbey Inn!" I whispered. "The Abbey Inn!"

"Ah!" said he—"you've solved the mystery, have you? But can you explain how this stuff comes to be floating about the floor of your house?"

"I cannot," I confessed. "But at all costs we must go in. We must learn the worst!"

"Yes, we'll risk it now," said the Inspector.

Close together we entered and made our way towards the study. As we passed the door-way of the ante-room in which the telephone was placed. I glanced, aside, and thereupon:

"My God, Gatton!" I groaned. "Look!"

He pulled up and the two of us stood, horror-stricken, rooted to the spot, looking into the little room.

I have said that Coates invariably closed the windows before leaving the house, but here the window was open. Prone upon the floor was stretched the figure of a man!

He wore a light overcoat, and his hat lay under the telephone table—where it had evidently rolled at the moment of his fall. The poisonous smell was more apparent here than elsewhere; and looking down at the prone figure, the face of which was indiscernible because of the man's position:

"Why, Gatton!" I said in an awed whisper—"look!... he was speaking to some one!"

"I'm looking!" replied Gatton grimly.

Grasped rigidly in his left hand the fallen man held the telephone!

"We want gas-masks for this job," said the Inspector.

His words were true enough. I had already recognized the odor of the foul stuff. It was identical with that which, as we had come down from the upper floor of the Abbey Inn, had proceeded from the room wherein the mysterious shell had exploded. In a word my cottage was filled with some kind of poison-gas!

"We must risk it, anyway," said Gatton, "and find out who it is."

I nodded, sick with foreboding. Stooping swiftly, he succeeded in turning over the prone figure, whereupon I quite failed to restrain a hoarse cry of horror....

It was Eric Coverly!

The fume-laden room seemed to swim around me as I looked down at the dreadfully contorted features over which was creeping that greenish tint which had characterized the face of Sir Marcus as I had seen it on the morning of the body's recovery from the hold of the Oritoga.

"Drag him out," said Gatton huskily; "he may be alive."

But even as we bent to the attempt, both my companion and I were seized with violent nausea; for the wisps of gray mist which still floated in the air were nevertheless sufficiently deadly. However, we succeeded at last in dragging Eric Coverly into the passage. Here it became necessary to detach the telephone from the death-grip in which he held it.

I turned my head aside whilst Gatton accomplished this task; then together we bore Coverly out into the porch. At this point we were both overcome again by the fumes. Gatton was the first to recover sufficiently to stoop and examine the victim of this fiendish outrage. I clutched dizzily at an upright of the porch, and:

"Don't tell me he's dead," I whispered.

But Gatton stood up and nodded sternly.

"He was the last!" he said strangely. "They have triumphed after all."

The man who had driven the car and who now stood in a state of evident stupefaction looking over the gate, where he had been warned to remain by the Inspector, came forward on seeing Gatton beckoning to him.

"Notify the local officer in charge and bring a doctor," said Gatton. He turned to me. "Which is the nearest?"

Rapidly I gave the man the necessary instructions and he went running out to the car and soon was speeding away towards the house of a local physician.

I find it difficult to recapture the peculiar horror of the next few minutes, during which, half-fearful of entering the cottage, Gatton and I stood in the little sheltered garden adjoining the porch looking down at the body of this man who had met his end under my roof, in circumstances at once dreadful and incomprehensible.

Tragically, Eric Coverly was vindicated; by his death he was proved innocent. And by the manner of his death we realized that he had fallen a victim to the same malign agency as his cousin.

I have explained that my cottage stood in a strangely secluded spot, although so near to the sleepless life of London; and I remember that throughout the period between the departure of the man with the car and his return with the doctor and two police officers whom he had brought from the local depot, only one pedestrian passed my door and he on the opposite side of the road.

How little that chance traveler suspected what a scene was concealed from his eyes by the tall hedges which divided the garden from the highroad! It was as the footsteps of this wayfarer became faint in the distance, that suddenly:

"Come along!" said Gatton. "We might chance it now. I want to get to the bottom of this telephone trick."

We returned to the door of the ante-room, and side by side stood looking down at the telephone which had only been extracted from the grip of the dead man with so much difficulty. The Inspector stooped and took it up from the floor. The deadly gray mist was all but dissipated now, and together we stood staring stupidly at the telephone which Gatton held in his hand.

To all outward seeming it was an ordinary instrument, and my number was written upon it in the space provided for the purpose. Then, all at once, as we stepped into the room, I observed something out of the ordinary.

I could see a length of green cable proceeding from the wall-plug out through the open window. The cable attached to the instrument which Gatton held did not come from the proper connection at all, but came in through the window, and was evidently connected with something outside in the garden!

"What does this mean, Gatton?" I cried.

Evidently as deeply mystified as I, Gatton placed the telephone on the little table and fully opening the window, leaned out.

"Hullo!" he cried. "The cable leads up to the roof of the tool-shed!"

"To the roof of the tool-shed!" I echoed incredulously.

But Gatton did not heed my words, for:

"What the devil have we here?" he continued.

He was hauling something up from the flower-bed below the window, and now, turning to me, he held out ... a second telephone!

"Why, Gatton!" I cried, and took it from his hand, "this is the authentic instrument! See! It is connected in the proper way!"

"I see quite clearly," he replied. "It was simply placed outside, whilst a duplicate one was substituted for it. I observe a ladder against the shed. Let us trace the cable attached to the duplicate."

The ladder was one used by Coates about the garden; and now, climbing out of the window, Gatton mounted it and surveyed the roof of the lean-to which I used as a tool-shed.

"Ha!" he exclaimed. "A gas cylinder!"

"What!"

He fingered the green cable.

"This is not cable at all," he cried; "it's covered tubing! Do you see?"

He descended and rejoined me.

"You see?" he continued. "A call from the exchange would ring the bell in the ante-room here. This devilish contrivance"—he pointed to the false telephone—"is really hollow. The weight of the receiver hermetically closes the end of the tube, no doubt. But any one answering the call and taking up the duplicate instrument would receive the full benefit of the contents of the cylinder which lies up there on the roof!"

"My God, Gatton!" I muttered. "The fiends! But why was the contrivance not removed?"

"They hadn't time," he said grimly. "They had not counted on the death-grip of the victim!"

I heard a car come racing up to the gate, followed by the sound of many excited voices.

"At last we know where the gray mist came from," I said, as Gatton and I walked through the cottage to meet the new arrivals.

"We know more than that," he retorted. "We know how Sir Marcus died!"

"Gatton!" I cried excitedly, as we approached a group waiting in the porch—"do you mean—"

He looked at me grimly.

"I mean," he said slowly, "that I have not forgotten the gas-plug in the wall of that recess in the supper-room at the Red House! The only thing I was doubtful about (the means by which the victim was induced to admit the gas into the room) is now as clear as daylight."

"You are right, Gatton," I agreed. "The same trick has succeeded twice."

"The same trick, as you say, Mr. Addison; with one trifling variation, a device which would only suggest itself to such a brain as that of—"

"Dr. Damar Greefe!" I cried.

"I believe you are right."

And now fell an awesome silence; for whilst Gatton and I stood bare-headed, the unfortunate Eric Coverly was being carried out to the waiting car; and even as I turned my eyes away in horror from that spectacle, I was endeavoring to frame the words in which I should acquaint Isobel with this second ghastly tragedy.

Here, indeed, was a new development of "the Oritoga mystery"; and so queerly does the mind depart from the actualities at such a moment that I found myself thinking, even whilst Gatton was talking to me, of the bold head-lines which would greet readers of the press in the morning—and of the renewed excitement which would sweep throughout the length and breadth of the land when this dreadful alibi was proven.

Over the details of that gruesome tragedy I feel myself compelled to pass lightly, for even now the horror of it remains with me. The fumes of the poisonous gray mist lingered for hours in the house; and there were official visitations, testimonies and attestations, and the hundred and one formalities which invariably accompany such a tragedy but which I need not deal with in detail here.

Coates returned with the Rover, just as the body of the victim was being removed, and his account of what had occurred was simple enough, and followed the lines which we had anticipated. He had locked up and then gone to the garage for the car as I had directed him to do, returning to the cottage in time to admit Eric Coverly, whom he showed into the study, having informed him that I should be back in less than ten minutes. He had then proceeded to Denmark Hill railway station only to find, as I had found, that the appointment was a hoax and "the man with a box" a myth.

"You see," said Gatton, "the scheme of the plotter was simply this: to get Coates out of the way for a long enough time to allow the substitution of the telephone to be accomplished. The fact that Coates had closed the windows before leaving the house didn't interfere very much with the scheme. It's an old-fashioned catch on the ante-room window, and I have seen the marks upon the brass-work where it was forced from the outside with the blade of a knife. For the person who opened the window to take out the real telephone and put the other in its place was easy; and all that remained was to lift the gas-cylinder on to the shed and partly reclose the window as we found it. Coates, even if he had troubled to look, would not have noticed any difference in the dusk. It is the next move, however, which I find most interesting."

Gatton spoke with repressed excitement, and:

"What do you mean by 'the next move'?" I asked.

"Well," he replied, "we have good evidence to show that the assassin possesses an almost Napoleonic capacity for working by the time-table. Witness the employment of Constable Bolton in the Red House affair—which showed that our man was perfectly acquainted with the movements of the officer on that beat and timed his scheme accordingly. Very well ... having laid the telephone trap in your ante-room—did our man hurry away and make the call in person, which brought Coverly to the 'phone?—or did he remain watching the house and give the signal to some one else to do it?"

"I cannot imagine, Gatton. Nor does the point strike me as important."

"No?" said Gatton, smiling triumphantly. "Then I must explain. Whereas, in the Red House, the scheme worked automatically—for the time of Sir Marcus's arrival was fixed—in the present instance, some one had to watch for your return from the mythical appointment!"

"For my return?"

"Unquestionably! This scheme was arranged for your benefit, Mr. Addison. Unknowingly, poor Coverly saved you from a dreadful fate at the price of his own life! You see, they did not know that Coverly was coming here! Now, it will not have escaped your attention that he wore a soft felt hat, a light overcoat, and carried a black cane. So did you when you went out to keep the appointment made by the assassin!"

He paused, staring at me hard, and:

"Whoever was watching for your return," he said solemnly, "mistook Coverly for you! The moment that Coates drove away, the signal was given. It must have been. We were back here a few minutes later, Now do you see?"

"I do not, Gatton! What are you driving at?"

"At this: The telephone call must have been made from somewhere in the immediate neighborhood! There wasn't time to do it otherwise. And there is no public call office within a mile which is open after seven o'clock!"

"Good heavens!" I cried. "At last I understand!"

Gatton looked at me, smiling in grim triumph; and:

"Dr. Damar Greefe has a residence somewhere within a quarter-mile radius of this house!" he declared. "He has betrayed himself! Then—look here."

Unscrewing the front of the mouthpiece of the false telephone, he took out the strip of cardboard upon which my number was written, turned it over ... and there upon the back was another number!

"Just look up Dr. Brown-Edwards," he said. "He was the last occupant of the Red House, and may still be in the book."

Grasping the purpose of his inquiry, excitedly I did as he directed; and there sure enough the number appeared!

"The identical instrument that was used at the Red House!" cried Gatton. "Note the artistic finish with which even the correct exchange numbers are looked up!"

I sank back in my chair, silent, appalled at the perverted genius of this fiend whom we were pitted against in a life-or-death struggle. But presently:

"What was the object of the opening and closing of the garage doors at the Red House?" I asked, almost mechanically.

"Simple enough," Gatton replied. "Whereas here the telephone was installed, so that the bell could be rung by some one merely calling up your number—and the ringing stopped by the caller telling the exchange he had made a mistake—in the Red House, as I have discovered, the 'phone had been disconnected shortly after Dr. Brown-Edwards left the place."

"Then the opening and closing of the doors was merely a device for ringing the bell?"

"Yes. The opening of the first door set it ringing and the opening of the second probably stopped it. Mr. Addison," he stood up, resting his hands upon the table and regarding me fixedly—"we enter upon the final battle of wits: New Scotland Yard versus Dr. Damar Greefe and the green-eyed lady of Bast. Regarding the latter—there is a very significant point."

"What is that?"

"The 'voice' on this last occasion was that, not of a woman, but of a man."



CHAPTER XXIII

THE INEVITABLE

"I very much regret having to trouble you, Miss Merlin, at such a time," said Inspector Gatton, "but as the paper lodged with you by the late Sir Eric Coverly may throw some light upon a very dark matter, perhaps you will read it to us."

I watched the play of expression upon Isobel's face with a depth of sympathy which I cannot attempt to describe. The successive trials which had been imposed upon her in so short a time had robbed her cheeks of their sweet color and there were dark shadows under her eyes. The tumult of my own feelings was such that I was scarcely capable of consistent thought nor had I the moral courage to examine those emotions which stirred so wildly within me.

Late on the previous night I had performed the unhappy duty of breaking to her the news of Coverly's dreadful death. I shall never forget that black hour. Her courage, however, under all these trials had been admirable, and although I well knew what it must have cost her, she replied now with perfect composure:

"Look—I took it out of my bureau when I heard that you were here, Inspector."

She took up from the table a foolscap envelope sealed and having her name written upon it in large and somewhat unsteady characters.

"I would suggest," said Gatton, with a delicacy which earned my gratitude, "that you read it yourself first, Miss Merlin. If there is anything helpful in it you can then communicate it to me."

I saw Isobel biting her lip hard, but she resolutely tore open the envelope; and leaving her to read the contents, I joined Gatton at the window. We both stood staring out for what seemed a very long time, then:

"It is rather long," said Isobel in a low voice.

Gatton and I turned together, and saw her, looking even more pale than before, seated by the table holding a sheet of notepaper in her hand. Without glancing at either of us, she began to read as follows, in an even and monotonous voice which I knew she had adopted to hide her emotion:

"This account of my movements on the night of August 6th will only be read in the event of my being falsely adjudged guilty of the murder of my cousin, Marcus Coverly, or in the event of my death.

"On the afternoon of that date I was informed over the telephone that my fiancee, Isobel Merlin, was meeting Sir Marcus the same night at a place called the Red House. The address was given me and I was asked, in case I doubted the word of the speaker, to watch Miss Merlin's movements that evening.

"I had already quarreled with my cousin respecting his unwelcome attentions and although the result did not confirm the promise of the informant, in part at least the information was accurate. I have no idea of the speaker's identity except that the voice was the voice of a woman.

"Not desiring to trust any one in such a matter I, myself, obtained in a remote district the dilapidated garments which are now in the possession of the police and respecting which they have subjected me to close examination. Attired in these and having my face and hands artificially dirtied as a further disguise, I left my chambers by a back entrance about nine o'clock, and not having sufficient confidence in my make-up to enter a public vehicle, walked the whole of the way to College Road.

"I had little difficulty in finding the Red House, but on discovering that it was vacant, I immediately suspected a hoax. However, I determined to wait in the neighborhood until the time at which the voice had warned me the meeting was to take place. There were very few people about and a tremendous downfall of rain drenched me to the skin, for the only shelter afforded was that of the trees bordering the road unless I had been content to abandon my watch.

"Just before the downpour ceased but after it had abated its first fury, I came out from my inadequate shelter and began to walk in the direction of the High Street. I had not gone more than twenty paces when I saw a cab approaching, and the man, seeing my bedraggled figure, slowed up, and to my astonishment asked me the way to the Red House.

"I immediately peered into the cab—to find that the passenger was none other than Marcus Coverly. I had begun to doubt, but at this I doubted no longer. I gave the cabman the necessary directions and, slowly following on foot, I saw from the shelter of the trees on the opposite side of the road, Sir Marcus dismiss the cab and walk up the drive of the empty house.

"He was alone, and since I knew that Miss Merlin had not preceded him, I could only conclude that she would be following later. Accordingly I walked slowly away from the Red House again in the direction of the High Street, and some five minutes later I passed a constable accompanied by a man wearing a light Burberry and a soft hat, whom I knew later (although I failed to recognize him at the time) to have been Mr. Jack Addison.

"I stood at the corner by the High Street until long after midnight. Twice I returned to the Red House and once even penetrated as far as the porch; but although I thought I could detect a light shining out through the shutters of the room on the right of the door, I could not be sure of it and there was no sound of movement within.

"These were my only discoveries, and very wretched and dissatisfied I tramped back to my chambers wondering what the visit of Marcus Coverly to this apparently empty house could mean and why he had remained there, but particularly wondering why the voice had told me this part-truth which had turned me into a spy unavailingly.

"The discovery made at the docks on the following day placed a new and dreadful construction upon the motives of the speaker, and I awakened to the fact that although entirely innocent of any complicity I had laid myself open to a charge of having been concerned in the murder of my cousin.

"My ill-advised attempt to conceal the garments which I had used as a disguise, and of which I had not known how to dispose, was dictated by panic. I knew the police were watching me and I was fool enough to think that I could escape their vigilance.

"This is all I have to say. It explains nothing and it does not exonerate me, I am aware, but I swear that it is the truth,"

"(Signed) ERIC COVERLY, Bart."

Although she retained so brave a composure I recognized the strain which this new and cruel ordeal had imposed upon Isobel; and Gatton incurred a further debt of gratitude by his tactful behavior, for:

"Miss Merlin," he said earnestly—"you are a very brave woman. Thank you. I only wish I could have spared you this."

Shaking me warmly by the hand, he bowed and departed, leaving me alone with Isobel.

As the sound of his footsteps died away Isobel returned again to the seat from which she had risen; and a silence fell between us. My own feelings I cannot attempt to depict, but I will confess that I was afraid of my humanity at that moment. Never had Isobel seemed more desirable; never had I longed as I longed now to take her in my arms.

The tension of that silence becoming insupportable:

"You will not stay here alone?" I asked in an unnatural voice.

Isobel, without looking up, shook her head.

"I am going to Mrs. Wentworth—my Aunt Alison," she replied.

"Good," I said. "I am glad to know that you will be in her cheery company."

Mrs. Wentworth was, indeed, a charming old lady, and so far as I knew, Isobel's only relation in London, if not in England. She occupied a house which, like herself, was small, scrupulously neat and old-worldly. One of those tiny residences which, once counted as being "in the country," had later become enmeshed in the ever-spreading tentacles of greater London.

It was situated on the northern outskirts of the county-city, and although rows of modern "villas" had grown up around it, within the walls of that quaint little homestead one found oneself far enough removed from suburbia.

"When are you going, Isobel?" I asked.

"I think," she replied, "in the morning."

"Will you let me drive you in the Rover?—or are you taking too much baggage?"

"Oh, no," she said, smiling sadly—"I am going to live the simple life for a week. Going out shopping with Aunt Alison—and perhaps sometimes to the pictures!"

"Then I can drive you over?"

"Yes—if you would like to," she answered simply.

I took my leave shortly afterwards and proceeded to the Planet office. I had work to do, but I must admit that I little relished the idea of returning to my cottage. Diverted, now, from the notorious Red House, public interest had centered upon my residence, and the seclusion which I had gone so far to seek was disturbed almost hourly by impertinent callers who seemed to think that the scene of a sensational crime was public property.

Coates had effectually disillusioned several of them on this point, but, nevertheless, the cottage had become distasteful to me. I realized that I must seek a new residence without delay. Shall I add that the primary cause of my reclusion no longer operated so powerfully? Of my dreams at this time I will speak later; but here I may say that I knew, and accepted the knowledge with a fearful joy, that if my new house of hope was doomed to be shattered, no spot in broad England could offer me rest again.

It was not then, until late that night, that I returned to my once peaceful abode. Coates was waiting up for me, but he had nothing of importance to report, apparently, until, when I had dismissed him, he turned in the doorway, and:

"Excuse me, sir," he said—and cleared his throat.

"Yes, Coates?"

"About half an hour ago, sir, the dogs all around started howling, sir. I thought I'd better mention it, as Inspector Gatton asked me this morning if I had ever heard the dogs howling."

I looked at him straightly.

"Inspector Gatton asked you thus?"

"He did, sir. So I have reported the occurrence. Good night, sir."

"Good night, Coates," I replied.

But for long enough after his departure I sat there in the armchair in my study, thinking over this seemingly trivial occurrence. From where I sat I could see the light shining upon the gilt-lettered title of Maspero's "Egyptian Art"—and my thoughts promised to be ill bedfellows.

Contrary to custom, I slept that night with closed windows! And although I awakened twice, once at two o'clock and again at four, thinking that I had heard the mournful signal of the dogs, nothing but my own uneasy imagination disturbed my slumbers.

Breakfast despatched, and my correspondence dealt with, I sent Coates to the garage for my little car, and since I should have another companion, left him behind, and myself drove to Isobel's flat. Woman-like, she was not nearly ready, and there was much bustling on the part of the repentant Marie—who had been retained in spite of her share in the tragedy of Sir Marcus's death—before we finally set out for Mrs. Wentworth's.

Isobel was very silent on the way, but once I intercepted a sidelong glance and felt my heart leaping madly when she blushed.

Mrs. Wentworth made me very welcome as had ever been her way. She was an eccentric, but embarrassingly straightforward old lady; and if I had heeded her simple motherly counsel in the past all might have been different.

She bore Isobel off to her room, leaving me to my own devices, for she had never observed any ceremony towards me in all the years that I had known her, but had taught me to make myself at home beneath her hospitable roof. I knew, too, because she had never troubled to disguise the fact, that she regarded Isobel and me as made for one another. Isobel's engagement to poor Eric Coverly, Mrs. Wentworth had all along regarded as a ghastly farce, and I can never forget her reception of me on the occasion of my first visit after returning from Mesopotamia.

Half an hour or so elapsed, then, before Isobel returned; and, although she came into the room confidently enough, the old tension reasserted itself immediately. I felt that commonplaces would choke me. And although to this day I cannot condone my behavior, for the good of my soul I must confess the truth.

I took her in my arms, held her fast and kissed her.

An overwhelming consciousness of guilt came to me even as her lips met mine, and, releasing her, I turned aside, groaning.

"Isobel!" I said hoarsely—"Isobel, forgive me! I was a cad, a villain ... to him. But—it was inevitable. Try to forget that I was so weak. But, Isobel—"

I felt her hand trembling on my arm.

"We must both try to forget, Jack," she whispered.

I grasped her hands and looked eagerly—indeed I think wildly—into her eyes.

"Because my life is over if I lose you," I said, "I suppose I was mad for a moment. Tell me that one day—when it is fit and proper that you should do so—you will give me a hearing, and I will perform any penance you choose. I acted like a blackguard."

"Stop!" she commanded softly.

She raised her eyes, and her grave, sweet glance cooled the fever which consumed me and brought a great and abiding peace to my heart.

"You were no more to blame than I!" she said. "And because—I understand, it is not hard to forgive. I don't try to excuse myself, but even if—he—had lived, I could never have gone on with it, after his ... suspicions. Oh, Jack! why did you leave me to make that awful mistake?"

"My dearest," I replied, "God knows I have suffered for it."

"Please," she said, and her voice faltered, "help me to be fair to ... him. Never—never—speak to me again—like that ... until—"

But the sentence was never completed; for at this moment in bustled Aunt Alison—in appearance a white-haired, rosy-faced little matron, very brisk in her movements and very shrewd-eyed. A dear old lady, dearer than ever to me in that she had tried so hard to bring Isobel and my laggard self together. She had, as usual, more to say than could be said in the time at her disposal. As we proceeded to the dining-room:

"Now then, you boys and girls, I'm starving, if you're not. What a time I've had with cook, not knowing when you might be here. Cook's leaving to be married: I'm afraid she's neglected this sea-kale. Dear, dear! what love will do for people's minds, to be sure. Put your hair straight, Isobel, dear, or Mary will think Jack has been kissing you! I saw her kiss the postman yesterday. Mary, I mean! You're eating like a pigeon, Jack! Gracious me! Where's the pepper? Mary! Ring the bell, Isobel. I must speak to that postman; he's made Mary forget to put any pepper in the cruet, and any one might have seen them. It isn't respectable!"

"Dear Aunt Alison!" I said, as the active old lady ran out (Mary not being promptly enough in attendance). "She loves to keep running in and out like a waiter! What a friend she has been to me, Isobel! You could not be in better company at such a time."

"She's a darling!" agreed Isobel, and when I met her glance across the table she blushed entrancingly.

Then, in a moment, tears were in her eyes; and knowing of whom she was thinking, I sat abashed—guilty and repentant. I had transgressed against the murdered man; and there and then I made a solemn, silent vow that no word of love again should pass my lips until the fit and proper time of mourning was over. Because I faithfully kept this vow, I dare to hope that my sin is forgiven me.

Luncheon at that homely house, with Isobel, was an unalloyed delight; and I regretted every passing minute which brought me nearer to the time when I must depart. But when at last I said good-by it was a new world upon which I looked—a new life upon which I entered. I have said that to-day I venture to hope my poor human transgression is forgiven me. Yet it did not go unpunished. Little did I dream, in my strange new happiness, how soon I was to return to that house—how soon I was to know the deadliest terror of my life.



CHAPTER XXIV

A CONFERENCE—INTERRUPTED

"The case has narrowed down," said Gatton, "from my point of view, into the quest of one man—"

"Dr. Damar Greefe!"

"Precisely. You have asked me what I found at Friar's Park and the Bell House, and I can answer you very briefly. Nothing! The latter place, had quite obviously been fired in a systematic and deliberate way. I suspect that the contents of the rooms had been soaked with petrol. It burned to a shell and then collapsed. At the present moment it is merely a mound of smoking ashes.

"Of course, the local fire-brigade was hopelessly ill-equipped, but even with the most up-to-date appliances I doubt if the conflagration could have been extinguished. The men watching the house were thrown quite off their guard when flames began to leap out of the windows: hence, the escape of Damar Greefe."

"You are sure he did escape?"

Gatton stared at me grimly.

"To whom do you suppose you are indebted for the telephone trick?" he asked. "Besides—Blythe, the fool, actually heard the car at the moment that it came out on to the highroad! Oh, they bungled the thing villainously. My Marathon feat saved your life, Mr. Addison, but it looks like losing me the case! We have the Hawkins couple. But, although a graceless pair, they were more dupes than knaves. I am convinced, personally, that neither of them suspected that Lady Burnham Coverly was dead. Damar Greefe had represented to them that she had lost her reason."

"Good heavens! what a scheme!"

"What a scheme, indeed. Hawkins seems to have considered that his duty—which was merely to keep intruders out of the park—was dictated by necessity. He thought that if Lady Coverly's real condition became known she would be removed to a madhouse! He also thought that a nurse was in attendance."

"A nurse!"

"Yes. He assured me that he had heard and seen her! Mrs. Hawkins also was certain on the point. Neither of them were ever allowed in the house, by the way. But Damar Greefe paid them well—and they were satisfied. The identity of the 'nurse' is evident, I think?"

"Perfectly evident. But how was poor Lady Coverly disposed of—and why this elaborate secrecy?"

"Well," replied Gatton slowly—"out of the multitude of notes which I have compiled upon the case, I have worked out a sort of summary, and it amounts to this: The whole series of outrages turns upon something in the financial arrangements of the late Sir Burnham of benefit to the Eurasian doctor. It may be that Damar Greefe had some secret locked up in the Bell House which he could not very well remove, and that the greatest peril he feared was the taking over of the Park property by an heir. I assume he had complete authority over the late Lady Burnham; and his object in concealing her death (for our investigations at Friar's Park have definitely established the fact that no one had resided there for twelve months at least) was clearly this: he hoped to carry on the pretense of attending upon the invalid until—"

"Until there was no heir to the property remaining alive!" I interrupted excitedly. "Exactly, Gatton! That is my own theory, too!

"We have now received," continued the Inspector, "some particulars concerning the circumstances of Roger Coverly's death in Basle. Whilst there was no direct evidence of foul play (and at that time at any rate no reason to suspect it) I am convinced that the local physician who attended him at the hotel and the specialist who was sent for post-haste from Zurich were by no means agreed as to the cause of death.

"The symptoms were apparently not unlike those which would be caused by a snake-bite, for instance; but naturally one does not look for poisonous snakes in Switzerland. There was some sort of inflammation of the skin apparently"—he consulted a page of his note-book—"which might have been eczema or something similar, of course, but which according to medical evidence had no apparent connection with the cause of his death. This was given in the certificate simply as syncope—although there did not appear to be any hereditary cardiac trouble or anything of the kind to account for a young fellow of that age dying suddenly of heart failure. And there had been nothing in his life during his sojourn at Basle which would help to clear up the mystery.

"However, no doubt seems to have arisen at the time, as you can well understand; nevertheless, I, personally, count the death of Roger Coverly as the first of the outrages to be laid to the credit of Dr. Damar Greefe!"

"The object of the whole thing is still completely dark to me," I declared.

"In a sense it is dark to me," replied Gatton; "but considering that the boy died at a time when the health of his father, Sir Burnham, was already giving cause for anxiety, I maintain that he was removed because his inheritance of Friar's Park was feared—by some one. The invitation from Dr. Damar Greefe to Sir Marcus is a very significant piece of evidence, of course; and when we consider that it reached Sir Marcus within a very short time of his return from Russia, the conclusion is obvious.

"He inherited the title on the death of Sir Burnham, whilst he was on service in Archangel. Being in Russia, I conclude that he was not accessible from the Eurasian doctor's point of view. Directly he became accessible, this invitation arrived; and it is perfectly clear that the fate intended for him was that which so nearly befell yourself! Remember, I have seen the gun mounted on the tower of Friar's Park and I assure you it was not placed there yesterday. In short, I have no doubt that it was put there in anticipation of Sir Marcus's visit and only employed in your case as a sort of afterthought.

"The Red House plot was the next move on the part of the Eurasian, and it succeeded almost faultlessly. The accident at the docks prevented the scheme being carried out in all its details, but it did not entirely dislocate the murderer's arrangements, for it left us with no better clew to his identity than the statuette of the cat."

"The presence of that statuette calls for some explanation, Gatton," I said.

Gatton very carefully lighted his pipe.

"That is true," he admitted, "but I will come to this side of the case later; at present I am summing up the evidence against Damar Greefe—who is certainly the acting partner in this series of outrages against the members of the house of Coverly. Observe the ingenuity of the Red House plot.

"He hoped by this not only to bring about the death of Sir Marcus, but also, by conviction for his murder, the death of the next heir, Mr. Eric Coverly! In fact, so well was his plan conducted, that even now—although we know poor Sir Eric to have been innocent—you will note that he has been unable to establish an alibi even by a full confession of his movements on the night of the crime! In other words, if he had not fallen a victim to the precipitancy of his enemies, to-day his name would be under as black a cloud as ever. It was with the idea of clearing him that I caused those paragraphs to be distributed to the press, in which I anticipated the existence of such a confession as he had actually made—but, I may add, of one more convincing than that which we heard Miss Merlin read."

"Do you mean, Gatton," I said, looking hard at him, "that by professing to have established the innocence of Eric Coverly, you hoped to draw down upon him the renewed activities of his enemies?"

Gatton looked rather guilty, but:

"I do admit it!" he said. "Nevertheless he did not fall a victim to this trap which I had laid for him in his own best interests. After all, you must admit that his death was an accident; for he suffered the penalty of your misdeeds."

"My misdeeds!" I cried.

Gatton smiled grimly.

"I say misdeeds," he continued—"although they were not conscious on your part. But it is fairly evident, I think, that whereas the unknown partner of Dr. Damar Greefe was an active enemy of the Coverlys (witness the evidence of 'the voice' and of the cat statuette), it is to Dr. Damar Greefe himself that you are indebted for the three attempts on your life; the first two at Upper Crossleys and the third here in your own home by the simple but deadly expedient of substituting for your own 'phone the duplicate one which previously had been employed so successfully at the Red House! He hoped to remove a dangerous obstacle from his path and a menace to this safety."

"But, my dear Gatton, why should he regard me as a menace more deadly than you, for instance?"

"The reason is very plain," answered Gatton. "I don't think he paid you the compliment of regarding your investigations as likely to prove more successful than my own, but I do think that he apprehended danger from the indiscretions of his lady accomplice."

"Do you refer to the woman who visited me at the Abbey Inn?"

"I do," said Gatton shortly, "and to the woman who visited you here and stole the statuette of Bast! The history of Edward Hines and his predecessor, which you have so admirably summarized, points to the presence in the Upper Crossleys neighborhood of such a character as we have been seeking ever since your experience here (I refer to the cat-eyes which looked in through the window)."

"I begin to see, Gatton," I said slowly.

"With what object this unknown woman visited you at the Abbey Inn I cannot conjecture, but doubtless this would have been revealed had not her visit been interrupted and terminated by the appearance of the Eurasian doctor upon the scene. From your own account she recognized that she had committed an indiscretion by coming there, and of the doctor's anger—- which he was quite unable to conceal—you have told me. Note also that the next episode was your being followed by Cassim, the Nubian, undoubtedly with murderous intent. Then, recognizing that he had hopelessly compromised himself, the Eurasian took desperate means to silence you for ever."

"He did," I said, "and came very near to succeeding. But to return, Gatton, to this problem of the image of Bast. You see, the figure of a cat was painted upon the case in which Sir Marcus's body was found and the image of a cat was discovered inside the case. Then, you will not have overlooked the significance of the fact that Edward Hines was the recipient of a present from his unknown friend which also took the form of a gold figure of a cat, and which I found, when I examined it, to be of ancient Egyptian workmanship."

"Right!" said Gatton, and emphatically bringing his open hand down upon the table: "I said at the very beginning of the case, Mr. Addison, that it turned upon the history of this Egyptian goddess, and I think my theory has been substantiated at every point."

"It has, Inspector," I agreed; "but I don't know that the fact enlightens us very much; for it merely indicates that the man whom you declare to be the central figure of the conspiracy is only a secondary figure, and that all we know about the person whom we may regard as the prime mover is that she is a woman—apparently possessing supernormal eyes which glitter in the dark. She is also associated in some way with the figure of Bast. What is her relation to Dr. Damar Greefe and in what way is she interested in the destruction of the Coverly family?"

Gatton smoked in silence for a while, staring at me reflectively, then:

"If we knew that, Mr. Addison," he said, "we should know all there is to know about 'the Oritoga mystery.' But I think we should have advanced a long step towards this information if we could apprehend the Eurasian. Of course we have gathered up all the ragged details of the Red House incident: I refer to the carter who delivered the crate and collected it in the morning, of the caterer who supplied the supper and so forth. As I had fully expected, none of the evidence helped us at all."

"'The voice,'" I began.

"Exactly! The same 'voice' beyond a doubt, and the whole thing worked through the means of district messengers and others, telephonically instructed. No one appeared throughout, Mr. Addison."

"Yet," I said deliberately, "there was one point at which some one must have appeared—"

"Yes," he interrupted, "some one dragged the body out of that supper-room, down to the garage, and packed it in the crate."

"You have definitely convinced yourself that the telephone device was practiced there?"

"Beyond question. Haven't you seen the exchange number? That plug where at some time a gas-fitting had been fixed up in the wall—you remember?—proved on investigation to communicate with an empty room adjoining. The gas cylinder was placed there of course, and the telephone in the recess of the supper-room, where, fastened in by the velvet curtain, any one using the poison installation would be suffocated almost immediately."

"Good God, Gatton!" I cried. "It's a horrible business, and for my own part I have no idea what the next step should be."

"I'm a bit doubtful, myself," admitted Gatton; "but you know the line of reasoning which has led me to the conclusion that these people possess a base of operations somewhere in this district. I am having the neighborhood scoured pretty thoroughly, and I think it is merely a question of time, now, for us to hem in the wanted man—"

"And the wanted woman!" I added.

We were interrupted by a knock at the study door, and Coates came in with the evening mail.

"Excuse me, Gatton," I said—for I had observed that one of the letters was from Isobel.

Eagerly I tore open the envelope ... and what I read struck a sudden chill to my heart. Looking up:

"Gatton!" I cried—"Miss Merlin has received, by post, a small statuette of Bast!"

"What!"

"From her brief description I am almost tempted to believe that it is the one which was stolen from here! She is dreadfully frightened, naturally."

The Inspector stood up.

"We must see it," he said rapidly, "at once; and we must see the wrapping it came in and the postmark. It is maddening," he burst out angrily, "to think that Dr. Damar Greefe may be somewhere within less than half a mile of us as we sit here now, that we could ring him up if we knew his number; but that even with all the resources of the Criminal Investigation Department at work we may yet be unable to find him! Even an outside suburb like this is a very big place to search and the job is something like looking for a needle in a haystack!"

My own frame of mind was one of horrible doubt and indecision. I knew not what to do for the best; and Gatton had begun to pace up and down like a caged wild beast. Therefore:

"Fill your pipe," I said wearily. "A lot may depend upon our next move. To make a false one would perhaps be fatal."

Gatton stared at me almost savagely, then threw himself back into the armchair from which he had arisen, and was just reaching out for the tobacco-jar which I had pushed before him, when a bell rang. I heard Coates opening the front door, and wondering whom this late visitor could be, I stared questioningly at the Inspector.

Came a tap upon the door.

"Come in," I cried.

Coates entered, and standing stiffly in the doorway:

"Dr. Damar Greefe!" he announced.

Unmoved, he stood aside; and whilst Gatton and I slowly rose from our chairs in a state of utter stupefaction, the Eurasian doctor entered, and stood, a tall, gaunt figure, towering over the burly form of Coates in the doorway!

His hawk eyes blazed feverishly and his face was drawn and haggard, whilst I observed with a sort of horrified wonder that he seemed to be almost too weak to stand. For, as Gatton and I came finally to our feet, he clutched at the edge of a bookcase, but recovered himself, bowed in that stately fashion which immediately translated me in spirit to the strange library in the Bell House, and:

"Gentlemen," he said, and his harsh voice rose scarcely above a whisper—"pray resume your seats. I shall not detain you long."



CHAPTER XXV

STATEMENT OF DAMAR GREEFE, M.D.

The speaker reeled and seemed about to fall. Whereupon Gatton sprang forward and placed an armchair, which he himself had occupied, for Dr. Damar Greefe. The latter inclined his head in acknowledgment and sank down weakly, clutching at both arms of the chair.

For my own part, I had not yet recovered power of speech; but:

"Dr. Damar Greefe," said the Inspector, closely watching the man who sat there collapsed in the chair, "I arrest you on a charge of murder. I have to warn you that anything you now say will be used in evidence against you."

The Eurasian exerted a supreme effort, straightening his gaunt body, and fixing the gaze of those hawk eyes upon Inspector Gatton. When he spoke his harsh voice had gained strength and his manner was imperious.

"Detective-Inspector Gatton," he replied, "you do no more than your duty. I have come here only with the utmost difficulty in my weak state. Therefore, you need apprehend no attempt at escape on my part. I have come with a purpose. This purpose I shall fulfill; after which"—he shrugged his square shoulders—"I shall be at your service."

"Very good," said Gatton shortly, but I noted that his face was flushed in a way which betokened repressed excitement.

Giving me a significant glance, he went out to the ante-room, and:

"Sydenham 1448," I heard him call.

Damar Greefe closed his eyes and lay back in the chair; and a moment later:

"Hullo!" said Gatton. "Detective-Inspector Gatton, C.I.D., speaking from Willow Cottage, College Road. Send two men in a cab here at once to remove a prisoner.... Right! Good-by."

He came in again, and closing the door behind him, stood staring at Damar Greefe in a sort of wonderment. The Eurasian wearily opened his eyes and looked slowly from side to side. Then:

"Pray be seated, Inspector Gatton," he said. "I have a communication to make."

Gatton, with never a word, drew up a chair and sat down.

"I do not desire to be interrupted," continued Damar Greefe, "until my communication is finished. You understand? It will not be repeated."

"I am afraid," murmured Gatton dryly, "it will have to be."

The Eurasian fully opened his glittering black eyes, and fixing them upon the speaker:

"It will not be repeated," he said harshly. "If I am misunderstood, inform me."

His peremptory manner in the circumstances was extraordinary—uncanny. As I had perceived in the first hour of our meeting, Dr. Damar Greefe was a man possessing tremendous force of character and a pride of intellect which clearly rendered him indifferent even of retribution.

"This point being settled," he continued, "be good enough, Inspector Gatton, and"—he turned his eyes in my direction—"Mr. Addison, to give me your undivided attention."

His manner was that of a lecturer—of a lecturer who takes it for granted that his discourse is above the heads of his audience; but when I say that the statement now made by this strange and terrible man held Gatton and me spellbound I say no more than the truth. Wearily, and more often than not having his eyes closed, Dr. Damar Greefe commenced to unfold a story of nameless horrors—and save that his harsh voice grew ever weaker and weaker, he displayed not the slightest trace of emotion throughout his appalling revelations.

"I am informing you," he said, "of these facts concerning my inquiries in the realm of teratology and the subjoined province of animism because I know that my life-work upon this subject can never now be completed. It having been necessary for me to destroy my papers and those specimens which, at hideous cost, I had accumulated during twenty years of travel through some of the most barbaric as well as the most civilized parts of the world, this present brief verbal account of the most important inquiry of all shall alone survive me. You are privileged. Therefore listen:

"Two important facts contributed to my choice of a special study: the social ostracism which very early in my professional career I found to be my lot; and the fact that in myself I afforded a living example of the hybrid. It has been said and not untruly that the Eurasian hates his father and scorns his mother. Certainly, this unnatural passion is reciprocated by the parent stock; for the Eurasian is barely acknowledged by his dark brethren and hardly tolerated by the white.

"In spite of my qualifications—I am a Doctor of Medicine, a Master of Arts, and hold other degrees of Leipzig, the Sorbonne, and elsewhere—I recognized very early in my career that ordinary practice was impossible for me. I therefore turned my attention to the special study of embryology, as I fortunately possessed sufficient private means to enable me—by careful living—to dispense with the usual proceeds of my profession.

"In short, I hoped to triumph over my hereditary handicap and to build for myself a reputation which should rise above the petty disabilities of caste and place my name upon a level with those of Haeckel, Weismann, Wallace, Focke and the other great students who have helped to advance our knowledge of the science of evolution.

"I early turned my attention to the traditions associated with the Cynocephalus hamadryas, or Sacred Baboon of Abyssinia. I took up my quarters on the banks of the Hawash and succeeded in ingratiating myself with the Amharun. The result of my sojourn amongst these strange people is embodied in my work 'The Ape-Men of Shoa.'

"This work is unpublished and may never see the light, but briefly I may state that the Amharun are a Semitic tribe allied to the Falashas and have been settled for many generations in this southern province of Abyssinia. Claiming descent from Menelek, son of Suleiman and the Queen of Sheba, they have always been regarded as unclean pariahs. In part this is due to their bestial custom of eating meat cut from living animals, but it is more particularly attributable to the periodical appearance among them of these cynocephalytes, or man-apes, which form the subject of my work.

"My close inquiries into the physiological history of these monstrosities were only conducted with the utmost difficulty. In the first place I found that it was customary among the Amharun to slay the creatures at birth, but in those rare cases of survival the cynocephalytes were banished from the community and were compelled to lead a wild life, subsisting as best they might in the foothills of the desolate mountain region.

"Thus, in the first place these creatures were difficult of access; in the second place, they readily contracted tuberculosis, even in that warm, dry climate; and in the third place their ferocity rendered them more formidable to approach than any tiger in its lair. I may add here that this predisposition to pulmonary disease is (and this I have definitely established) a characteristic of all mammalian hybrids.

"Nevertheless, my studies were by no means unfruitful, since they resulted in a triumphant vindication of my theory, which, contrary to that universally received and more closely allied to the 'exploded' Mendel's Law, ascribed the appearance of such monsters not to any strict physiological process but to a hitherto unclassified law of embryology which I had hoped would one day take its place in science under my name.

"Armed with the results of my Abyssinian inquiry, I next proceeded to Syria; for among certain desert tribes I hoped to find further evidence to support my theory. In short, in the Arabic tradition of the jackal-man (which is allied to the medieval and universal belief in the were-wolf or loup-garou) and in the Indian myth of the woman who, possessing an ordinary human form by day, assumes that of a tigress by night, I thought I detected a profound truth.

"Since my life-work is destroyed, I am egotist enough to desire that credit for it should not accrue to another. I do not propose, therefore, more than lightly to touch upon the Damar Greefe Law, but I may say that in its essentials it is this:

"Such strange hybrids do actually occur periodically and in rare cases survive; but their animal proclivities which are physically demonstrable, and the possession of certain animal attributes (as the furry body of the cynocephalyte, the claws and teeth of the jackal-man, etc.), are physical reflections of a mental process taking place in the female parent."

He glared at me wildly, as if anticipating contradiction, but Gatton and I remaining silent:

"There is no physical association," he continued, "between the hybrid and that creature whose qualities and peculiarities he seemingly inherits. I have proved by a long series of elaborate experiments that a true hybrid of this description is a physiological impossibility. But that a false hybrid such as I have indicated may appear is a fact which does not rest solely upon my studies amongst the Amharun, nor upon my subsequent inquiries throughout Assyria, Somaliland and the middle valleys of the Yellow River."