The first thing Dr. Silence did was to lock up Smoke in the study with a saucer of milk before the fire, and then make a search of the house with Flame. The dog ran cheerfully behind him all the way while he tried the doors of the other rooms to make sure they were locked. He nosed about into corners and made little excursions on his own account. His manner was expectant. He knew there must be something unusual about the proceeding, because it was contrary to the habits of his whole life not to be asleep at this hour on the mat in front of the fire. He kept looking up into his master's face, as door after door was tried, with an expression of intelligent sympathy, but at the same time a certain air of disapproval. Yet everything his master did was good in his eyes, and he betrayed as little impatience as possible with all this unnecessary journeying to and fro. If the doctor was pleased to play this sort of game at such an hour of the night, it was surely not for him to object.

So he played it too; and was very busy and earnest about it into the bargain.

After an uneventful search they came down again to the study, and here Dr. Silence discovered Smoke washing his face calmly in front of the fire. The saucer of milk was licked dry and clean; the preliminary examination that cats always make in new surroundings had evidently been satisfactorily concluded. He drew an arm-chair up to the fire, stirred the coals into a blaze, arranged the table and lamp to his satisfaction for reading, and then prepared surrept.i.tiously to watch the animals. He wished to observe them carefully without their being aware of it.

Now, in spite of their respective ages, it was the regular custom of these two to play together every night before sleep. Smoke always made the advances, beginning with grave impudence to pat the dog's tail, and Flame played c.u.mbrously, with condescension. It was his duty, rather than pleasure; he was glad when it was over, and sometimes he was very determined and refused to play at all.

And this night was one of the occasions on which he was firm.

The doctor, looking cautiously over the top of his book, watched the cat begin the performance. It started by gazing with an innocent expression at the dog where he lay with nose on paws and eyes wide open in the middle of the floor. Then it got up and made as though it meant to walk to the door, going deliberately and very softly. Flame's eyes followed it until it was beyond the range of sight, and then the cat turned sharply and began patting his tail tentatively with one paw. The tail moved slightly in reply, and Smoke changed paws and tapped it again. The dog, however, did not rise to play as was his wont, and the cat fell to patting it briskly with both paws. Flame still lay motionless.

This puzzled and bored the cat, and it went round and stared hard into its friend's face to see what was the matter. Perhaps some inarticulate message flashed from the dog's eyes into its own little brain, making it understand that the program for the night had better not begin with play. Perhaps it only realized that its friend was immovable. But, whatever the reason, its usual persistence thenceforward deserted it, and it made no further attempts at persuasion. Smoke yielded at once to the dog's mood; it sat down where it was and began to wash.

But the washing, the doctor noted, was by no means its real purpose; it only used it to mask something else; it stopped at the most busy and furious moments and began to stare about the room. Its thoughts wandered absurdly. It peered intently at the curtains; at the shadowy corners; at empty s.p.a.ce above; leaving its body in curiously awkward positions for whole minutes together. Then it turned sharply and stared with a sudden signal of intelligence at the dog, and Flame at once rose somewhat stiffly to his feet and began to wander aimlessly and restlessly to and fro about the floor. Smoke followed him, padding quietly at his heels.

Between them they made what seemed to be a deliberate search of the room.

And, here, as he watched them, noting carefully every detail of the performance over the top of his book, yet making no effort to interfere, it seemed to the doctor that the first beginnings of a faint distress betrayed themselves in the collie, and in the cat the stirrings of a vague excitement.

He observed them closely. The fog was thick in the air, and the tobacco smoke from his pipe added to its density; the furniture at the far end stood mistily, and where the shadows congregated in hanging clouds under the ceiling, it was difficult to see clearly at all; the lamplight only reached to a level of five feet from the floor, above which came layers of comparative darkness, so that the room appeared twice as lofty as it actually was. By means of the lamp and the fire, however, the carpet was everywhere clearly visible.

The animals made their silent tour of the floor, sometimes the dog leading, sometimes the cat; occasionally they looked at one another as though exchanging signals; and once or twice, in spite of the limited s.p.a.ce, he lost sight of one or other among the fog and the shadows.

Their curiosity, it appeared to him, was something more than the excitement lurking in the unknown territory of a strange room; yet, so far, it was impossible to test this, and he purposely kept his mind quietly receptive lest the smallest mental excitement on his part should communicate itself to the animals and thus destroy the value of their independent behaviour.

They made a very thorough journey, leaving no piece of furniture unexamined, or unsmelt. Flame led the way, walking slowly with lowered head, and Smoke followed demurely at his heels, making a transparent pretence of not being interested, yet missing nothing. And, at length, they returned, the old collie first, and came to rest on the mat before the fire. Flame rested his muzzle on his master's knee, smiling beatifically while he patted the yellow head and spoke his name; and Smoke, coming a little later, pretending he came by chance, looked from the empty saucer to his face, lapped up the milk when it was given him to the last drop, and then sprang upon his knees and curled round for the sleep it had fully earned and intended to enjoy.

Silence descended upon the room. Only the breathing of the dog upon the mat came through the deep stillness, like the pulse of time marking the minutes; and the steady drip, drip of the fog outside upon the window-ledges dismally testified to the inclemency of the night beyond.

And the soft crashings of the coals as the fire settled down into the grate became less and less audible as the fire sank and the flames resigned their fierceness.

It was now well after eleven o'clock, and Dr. Silence devoted himself again to his book. He read the words on the printed page and took in their meaning superficially, yet without starting into life the correlations of thought and suggestion that should accompany interesting reading. Underneath, all the while, his mental energies were absorbed in watching, listening, waiting for what might come. He was not over sanguine himself, yet he did not wish to be taken by surprise.

Moreover, the animals, his sensitive barometers, had incontinently gone to sleep.

After reading a dozen pages, however, he realized that his mind was really occupied in reviewing the features of Pender's extraordinary story, and that it was no longer necessary to steady his imagination by studying the dull paragraphs detailed in the pages before him. He laid down his book accordingly, and allowed his thoughts to dwell upon the features of the Case. Speculations as to the meaning, however, he rigorously suppressed, knowing that such thoughts would act upon his imagination like wind upon the glowing embers of a fire.

As the night wore on the silence grew deeper and deeper, and only at rare intervals he heard the sound of wheels on the main road a hundred yards away, where the horses went at a walking pace owing to the density of the fog. The echo of pedestrian footsteps no longer reached him, the clamour of occasional voices no longer came down the side street. The night, m.u.f.fled by fog, shrouded by veils of ultimate mystery, hung about the haunted villa like a doom. Nothing in the house stirred. Stillness, in a thick blanket, lay over the upper storeys. Only the mist in the room grew more dense, he thought, and the damp cold more penetrating.

Certainly, from time to time, he shivered.

The collie, now deep in slumber, moved occasionally,--grunted, sighed, or twitched his legs in dreams. Smoke lay on his knees, a pool of warm, black fur, only the closest observation detecting the movement of his sleek sides. It was difficult to distinguish exactly where his head and body joined in that circle of glistening hair; only a black satin nose and a tiny tip of pink tongue betrayed the secret.

Dr. Silence watched him, and felt comfortable. The collie's breathing was soothing. The fire was well built, and would burn for another two hours without attention. He was not conscious of the least nervousness.

He particularly wished to remain in his ordinary and normal state of mind, and to force nothing. If sleep came naturally, he would let it come--and even welcome it. The coldness of the room, when the fire died down later, would be sure to wake him again; and it would then be time enough to carry these sleeping barometers up to bed. From various psychic premonitions he knew quite well that the night would not pa.s.s without adventure; but he did not wish to force its arrival; and he wished to remain normal, and let the animals remain normal, so that, when it came, it would be unattended by excitement or by any straining of the attention. Many experiments had made him wise. And, for the rest, he had no fear.

Accordingly, after a time, he did fall asleep as he had expected, and the last thing he remembered, before oblivion slipped up over his eyes like soft wool, was the picture of Flame stretching all four legs at once, and sighing noisily as he sought a more comfortable position for his paws and muzzle upon the mat.

It was a good deal later when he became aware that a weight lay upon his chest, and that something was pencilling over his face and mouth. A soft touch on the cheek woke him. Something was patting him.

He sat up with a jerk, and found himself staring straight into a pair of brilliant eyes, half green, half black. Smoke's face lay level with his own; and the cat had climbed up with its front paws upon his chest.

The lamp had burned low and the fire was nearly out, yet Dr. Silence saw in a moment that the cat was in an excited state. It kneaded with its front paws into his chest, shifting from one to the other. He felt them prodding against him. It lifted a leg very carefully and patted his cheek gingerly. Its fur, he saw, was standing ridgewise upon its back; the ears were flattened back somewhat; the tail was switching sharply.

The cat, of course, had wakened him with a purpose, and the instant he realized this, he set it upon the arm of the chair and sprang up with a quick turn to face the empty room behind him. By some curious instinct, his arms of their own accord a.s.sumed an att.i.tude of defence in front of him, as though to ward off something that threatened his safety. Yet nothing was visible. Only shapes of fog hung about rather heavily in the air, moving slightly to and fro.

His mind was now fully alert, and the last vestiges of sleep gone. He turned the lamp higher and peered about him. Two things he became aware of at once: one, that Smoke, while excited, was _pleasurably_ excited; the other, that the collie was no longer visible upon the mat at his feet. He had crept away to the corner of the wall farthest from the window, and lay watching the room with wide-open eyes, in which lurked plainly something of alarm.

Something in the dog's behaviour instantly struck Dr. Silence as unusual, and, calling him by name, he moved across to pat him. Flame got up, wagged his tail, and came over slowly to the rug, uttering a low sound that was half growl, half whine. He was evidently perturbed about something, and his master was proceeding to administer comfort when his attention was suddenly drawn to the antics of his other four-footed companion, the cat.

And what he saw filled him with something like amazement.

Smoke had jumped down from the back of the arm-chair and now occupied the middle of the carpet, where, with tail erect and legs stiff as ramrods, it was steadily pacing backwards and forwards in a narrow s.p.a.ce, uttering, as it did so, those curious little guttural sounds of pleasure that only an animal of the feline species knows how to make expressive of supreme happiness. Its stiffened legs and arched back made it appear larger than usual, and the black visage wore a smile of beatific joy. Its eyes blazed magnificently; it was in an ecstasy.

At the end of every few paces it turned sharply and stalked back again along the same line, padding softly, and purring like a roll of little m.u.f.fled drums. It behaved precisely as though it were rubbing against the ankles of some one who remained invisible. A thrill ran down the doctor's spine as he stood and stared. His experiment was growing interesting at last.

He called the collie's attention to his friend's performance to see whether he too was aware of anything standing there upon the carpet, and the dog's behaviour was significant and corroborative. He came as far as his master's knees and then stopped dead, refusing to investigate closely. In vain Dr. Silence urged him; he wagged his tail, whined a little, and stood in a half-crouching att.i.tude, staring alternately at the cat and at his master's face. He was, apparently, both puzzled and alarmed, and the whine went deeper and deeper down into his throat till it changed into an ugly snarl of awakening anger.

Then the doctor called to him in a tone of command he had never known to be disregarded; but still the dog, though springing up in response, declined to move nearer. He made tentative motions, pranced a little like a dog about to take to water, pretended to bark, and ran to and fro on the carpet. So far there was no actual fear in his manner, but he was uneasy and anxious, and nothing would induce him to go within touching distance of the walking cat. Once he made a complete circuit, but always carefully out of reach; and in the end he returned to his master's legs and rubbed vigorously against him. Flame did not like the performance at all: that much was quite clear.

For several minutes John Silence watched the performance of the cat with profound attention and without interfering. Then he called to the animal by name.

"Smoke, you mysterious beastie, what in the world are you about?" he said, in a coaxing tone.

The cat looked up at him for a moment, smiling in its ecstasy, blinking its eyes, but too happy to pause. He spoke to it again. He called to it several times, and each time it turned upon him its blazing eyes, drunk with inner delight, opening and shutting its lips, its body large and rigid with excitement. Yet it never for one instant paused in its short journeys to and fro.

He noted exactly what it did: it walked, he saw, the same number of paces each time, some six or seven steps, and then it turned sharply and retraced them. By the pattern of the great roses in the carpet he measured it. It kept to the same direction and the same line. It behaved precisely as though it were rubbing against something solid.

Undoubtedly, there was something standing there on that strip of carpet, something invisible to the doctor, something that alarmed the dog, yet caused the cat unspeakable pleasure.

"Smokie!" he called again, "Smokie, you black mystery, what is it excites you so?"

Again the cat looked up at him for a brief second, and then continued its sentry-walk, blissfully happy, intensely preoccupied. And, for an instant, as he watched it, the doctor was aware that a faint uneasiness stirred in the depths of his own being, focusing itself for the moment upon this curious behaviour of the uncanny creature before him.

There rose in him quite a new realization of the mystery connected with the whole feline tribe, but especially with that common member of it, the domestic cat--their hidden lives, their strange aloofness, their incalculable subtlety. How utterly remote from anything that human beings understood lay the sources of their elusive activities. As he watched the indescribable bearing of the little creature mincing along the strip of carpet under his eyes, coquetting with the powers of darkness, welcoming, maybe, some fearsome visitor, there stirred in his heart a feeling strangely akin to awe. Its indifference to human kind, its serene superiority to the obvious, struck him forcibly with fresh meaning; so remote, so inaccessible seemed the secret purposes of its real life, so alien to the blundering honesty of other animals. Its absolute poise of bearing brought into his mind the opium-eater's words that "no dignity is perfect which does not at some point ally itself with the mysterious"; and he became suddenly aware that the presence of the dog in this foggy, haunted room on the top of Putney Hill was uncommonly welcome to him. He was glad to feel that Flame's dependable personality was with him. The savage growling at his heels was a pleasant sound. He was glad to hear it. That marching cat made him uneasy.

Finding that Smoke paid no further attention to his words, the doctor decided upon action. Would it rub against his leg, too? He would take it by surprise and see.

He stepped quickly forward and placed himself upon the exact strip of carpet where it walked.

But no cat is ever taken by surprise! The moment he occupied the s.p.a.ce of the Intruder, setting his feet on the woven roses midway in the line of travel, Smoke suddenly stopped purring and sat down. It lifted up its face with the most innocent stare imaginable of its green eyes. He could have sworn it laughed. It was a perfect child again. In a single second it had resumed its simple, domestic manner; and it gazed at him in such a way that he almost felt Smoke was the normal being, and _his_ was the eccentric behaviour that was being watched. It was consummate, the manner in which it brought about this change so easily and so quickly.

"Superb little actor!" he laughed in spite of himself, and stooped to stroke the shining black back. But, in a flash, as he touched its fur, the cat turned and spat at him viciously, striking at his hand with one paw. Then, with a hurried scutter of feet, it shot like a shadow across the floor and a moment later was calmly sitting over by the window-curtains washing its face as though nothing interested it in the whole world but the cleanness of its cheeks and whiskers.

John Silence straightened himself up and drew a long breath. He realized that the performance was temporarily at an end. The collie, meanwhile, who had watched the whole proceeding with marked disapproval, had now lain down again upon the mat by the fire, no longer growling. It seemed to the doctor just as though something that had entered the room while he slept, alarming the dog, yet bringing happiness to the cat, had now gone out again, leaving all as it was before. Whatever it was that excited its blissful attentions had retreated for the moment.

He realized this intuitively. Smoke evidently realized it, too, for presently he deigned to march back to the fireplace and jump upon his master's knees. Dr. Silence, patient and determined, settled down once more to his book. The animals soon slept; the fire blazed cheerfully; and the cold fog from outside poured into the room through every available c.h.i.n.k and crannie.

For a long time silence and peace reigned in the room and Dr. Silence availed himself of the quietness to make careful notes of what had happened. He entered for future use in other cases an exhaustive a.n.a.lysis of what he had observed, especially with regard to the effect upon the two animals. It is impossible here, nor would it be intelligible to the reader unversed in the knowledge of the region known to a scientifically trained psychic like Dr. Silence, to detail these observations. But to him it was clear, up to a certain point--and for the rest he must still wait and watch. So far, at least, he realized that while he slept in the chair--that is, while his will was dormant--the room had suffered intrusion from what he recognized as an intensely active Force, and might later be forced to acknowledge as something more than merely a blind force, namely, a distinct personality.

So far it had affected himself scarcely at all, but had acted directly upon the simpler organisms of the animals. It stimulated keenly the centres of the cat's psychic being, inducing a state of instant happiness (intensifying its consciousness probably in the same way a drug or stimulant intensifies that of a human being); whereas it alarmed the less sensitive dog, causing it to feel a vague apprehension and distress.

His own sudden action and exhibition of energy had served to disperse it temporarily, yet he felt convinced--the indications were not lacking even while he sat there making notes--that it still remained near to him, conditionally if not spatially, and was, as it were, gathering force for a second attack.

And, further, he intuitively understood that the relations between the two animals had undergone a subtle change: that the cat had become immeasurably superior, confident, sure of itself in its own peculiar region, whereas Flame had been weakened by an attack he could not comprehend and knew not how to reply to. Though not yet afraid, he was defiant--ready to act against a fear that he felt to be approaching. He was no longer fatherly and protective towards the cat. Smoke held the key to the situation; and both he and the cat knew it.