The covered alleyway gave upon Quadrant Mews; or so declared a notice painted on the dead wall of the passage.

Overhead, complaining as it swayed in the wind, hung the smirched and weather-worn sign-board of the Hog-in-the-Pound public house; wherefrom escaped sounds of such revelry by night as is indulged in by the British working-man in hours of ease. At the curb in front of the house of entertainment, dejected animals drooping between their shafts, two hansoms stood in waiting, until such time as the lords of their destinies should see fit to sally forth and inflict themselves upon a cab-hungry populace. As Kirkwood turned, a third vehicle rumbled up out of the mews.

Kirkwood can close his eyes, even at this late day, and both see and hear it all again—even as he can see the unbroken row of dingy dwellings that lined his way back from Quadrant Mews to Frognall Street corner: all drab and unkempt, all sporting in their fan-lights the legend and lure, "Furnished Apartments."

For, between his curiosity about and his concern for the girl, he was being led back to Number 9, by the nose, as it were,—hardly willingly, at best. Profoundly stupefied by the contemplation of his own temerity, he yet returned unfaltering. He who had for so long plumed himself upon his strict supervision of his personal affairs and equally steadfast unconsciousness of his neighbor's businesses, now found himself in the very act of pushing in where he was not wanted: as he had been advised in well-nigh as many words. He experienced an effect of standing to one side, a witness of his own folly, with rising wonder, unable to credit the strength of the infatuation which was placing him so conspicuously in the way of a snubbing.

If perchance he were to meet the girl again as she was leaving Number 9,—what then? The contingency dismayed him incredibly, in view of the fact that it did not avail to make him pause. To the contrary he disregarded it resolutely; mad, impertinent, justified of his unnamed apprehensions, or simply addled,—he held on his way.

He turned up Frognall Street with the manner of one out for a leisurely evening stroll. Simultaneously, from the farther corner, another pedestrian debouched, into the thoroughfare—a mere moving shadow at that distance, brother to blacker shadows that skulked in the fenced areas and unlively entries of that poorly lighted block. The hush was something beyond belief, when one remembered the nearness of blatant Tottenham Court Road.

Kirkwood conceived a wholly senseless curiosity about the other wayfarer. The man was walking rapidly, heels ringing with uncouth loudness, cane tapping the flagging at brief intervals. Both sounds ceased abruptly as their cause turned in beneath one of the porticos. In the emphatic and unnatural quiet that followed, Kirkwood, stepping more lightly, fancied that another shadow followed the first, noiselessly and with furtive stealth.

Could it be Number 9 into which they had passed? The American's heart beat a livelier tempo at the suggestion. If it had not been Number 9—he was still too far away to tell—it was certainly one of the dwellings adjacent thereunto. The improbable possibility (But why improbable?) that the girl was being joined by her father, or by friends, annoyed him with illogical intensity. He mended his own pace, designing to pass whichever house it might be before the door should be closed; thought better of this, and slowed up again, anathematizing himself with much excuse for being the inquisitive dolt that he was.

Approaching Number 9 with laggard feet, he manufactured a desire to light a cigarette, as a cover for his design, were he spied upon by unsuspected eyes. Cane under arm, hands cupped to shield a vesta's flame, he stopped directly before the portico, turning his eyes askance to the shadowed doorway; and made a discovery sufficiently startling to hold him spellbound and, incidentally, to scorch his gloves before he thought to drop the match.

The door of Number 9 stood ajar, a black interval an inch or so in width showing between its edge and the jamb.

Suspicion and alarm set his wits a-tingle. More distinctly he recalled the jarring bang, accompanied by the metallic click of the latch, when the girl had shut herself in—and him out. Now, some person or persons had followed her, neglecting the most obvious precaution of a householder. And why? Why but because the intruders did not wish the sound of closing to be audible to her—or those—within?

He reminded himself that it was all none of his affair, decided to pass on and go his ways in peace, and impulsively, swinging about, marched straight away for the unclosed door.

"'Old'ard, guvner!"

Kirkwood halted on the cry, faltering in indecision. Should he take the plunge, or withdraw? Synchronously he was conscious that a man's figure had detached itself from the shadows beneath the nearest portico and was drawing nearer, with every indication of haste, to intercept him.

"'Ere now, guvner, yer mykin' a mistyke. You don't live 'ere."

"How do you know?" demanded Kirkwood crisply, tightening his grip on his stick.

Was this the second shadow he had seemed to see—the confederate of him who had entered Number 9; a sentry to forestall interruption? If so, the fellow lacked discretion, though his determination that the American should not interfere was undeniable. It was with an ugly and truculent manner, if more warily, that the man closed in.

"I knows. You clear hout, or—"

He flung out a hand with the plausible design of grasping Kirkwood by the collar. The latter lifted his stick, deflecting the arm, and incontinently landed his other fist forcibly on the fellow's chest. The man reeled back, cursing. Before he could recover Kirkwood calmly crossed the threshold, closed the door and put his shoulder to it. In another instant, fumbling in the darkness, he found the bolts and drove them home.

And it was done, the transformation accomplished; his inability to refrain from interfering had encompassed his downfall, had changed a peaceable and law-abiding alien within British shores into a busybody, a trespasser, a misdemeanant, a—yes, for all he knew to the contrary, in the estimation of the Law, a burglar, prime candidate for a convict's stripes!

Breathing hard with excitement he turned and laid his back against the panels, trembling in every muscle, terrified by the result of his impulsive audacity, thunder-struck by a lightning-like foreglimpse of its possible consequences. Of what colossal imprudence had he not been guilty?

"The devil!" he whispered. "What an ass, what an utter ass I am!"

Behind him the knob was rattled urgently, to an accompaniment of feet shuffling on the stone; and immediately—if he were to make a logical deduction from the rasping and scraping sound within the door-casing—the bell-pull was violently agitated, without, however, educing any response from the bell itself, wherever that might be situate. After which, as if in despair, the outsider again rattled and jerked the knob.

Be his status what it might, whether servant of the household, its caretaker, or a night watchman, the man was palpably determined both to get himself in and Kirkwood out, and yet (curious to consider) determined to gain his end without attracting undue attention. Kirkwood had expected to hear the knocker's thunder, as soon as the bell failed to give tongue; but it did not sound although there was a knocker,—Kirkwood himself had remarked that antiquated and rusty bit of ironmongery affixed to the middle panel of the door. And it made him feel sure that something surreptitious and lawless was in process within those walls, that the confederate without, having failed to prevent a stranger from entering, left unemployed a means so certain-sure to rouse the occupants.

But his inferential analysis of this phase of the proceedings was summarily abrupted by that identical alarm. In a trice the house was filled with flying echoes, wakened to sonorous riot by the crash and clamor of the knocker; and Kirkwood stood fully two yards away, his heart hammering wildly, his nerves a-jingle, much as if the resounding blows had landed upon his own person rather than on stout oaken planking.

Ere he had time to wonder, the racket ceased, and from the street filtered voices in altercation. Listening, Kirkwood's pulses quickened, and he laughed uncertainly for pure relief, retreating to the door and putting an ear to a crack.

The accents of one speaker were new in his hearing, stern, crisp, quick with the spirit of authority which animates that most austere and dignified limb of the law to be encountered the world over, a London bobby.

"Now then, my man, what do you want there? Come now, speak up, and step out into the light, where I can see you."

The response came in the sniffling snarl of the London ne'er-do-well, the unemployable rogue whose chiefest occupation seems to be to march in the ranks of The Unemployed on the occasion of its annual demonstrations.

"Le' me alone, carntcher? Ah'm doin' no 'arm, officer,—"

"Didn't you hear me? Step out here. Ah, that's better.... No harm, eh? Perhaps you'll explain how there's no harm breakin' into unoccupied 'ouses?"

"Gorblimy, 'ow was I to know? 'Ere's a toff 'ands me sixpence fer hopenin' 'is cab door to-dye, an', sezee, 'My man,' 'e sez, 'yer've got a 'onest fyce. W'y don'cher work?' sezee. ''Ow can I?' sez I. ''Ere'm I hout of a job these six months, lookin' fer work every dye an' carn't find it.' Sezee, 'Come an' see me this hevenin' at me home, Noine, Frognall Stryte,' 'e sez, an'—"

"That'll do for now. You borrow a pencil and paper and write it down and I'll read it when I've got more time; I never heard the like of it. This 'ouse hasn't been lived in these two years. Move on, and don't let me find you round 'ere again. March, I say!"

There was more of it—more whining explanations artfully tinctured with abuse, more terse commands to depart, the whole concluding with scraping footsteps, diminuendo, and another perfunctory, rattle of the knob as the bobby, having shoo'd the putative evil-doer off, assured himself that no damage had actually been done. Then he, too, departed, satisfied and self-righteous, leaving a badly frightened but very grateful amateur criminal to pursue his self-appointed career of crime.

He had no choice other than to continue; in point of fact, it had been insanity just then to back out, and run the risk of apprehension at the hands of that ubiquitous bobby, who (for all he knew) might be lurking not a dozen yards distant, watchful for just such a sequel. Still, Kirkwood hesitated with the best of excuses. Reassuring as he had found the sentinel's extemporized yarn,—proof positive that the fellow had had no more right to prohibit a trespass than Kirkwood to commit one,—at the same time he found himself pardonably a prey to emotions of the utmost consternation and alarm. If he feared to leave the house he had no warrant whatever to assume that he would be permitted to remain many minutes unharmed within its walls of mystery.

The silence of it discomfited him beyond measure; it was, in a word, uncanny.

Before him, as he lingered at the door, vaguely disclosed by a wan illumination penetrating a dusty and begrimed fan-light, a broad hall stretched indefinitely towards the rear of the building, losing itself in blackness beyond the foot of a flight of stairs. Save for a few articles of furniture,—a hall table, an umbrella-stand, a tall dumb clock flanked by high-backed chairs,—it was empty. Other than Kirkwood's own restrained respiration not a sound throughout the house advertised its inhabitation; not a board creaked beneath the pressure of a foot, not a mouse rustled in the wainscoting or beneath the floors, not a breath of air stirred sighing in the stillness.

And yet, a tremendous racket had been raised at the front door, within the sixty seconds past! And yet, within twenty minutes two persons, at least, had preceded Kirkwood into the building! Had they not heard? The speculation seemed ridiculous. Or had they heard and, alarmed, been too effectually hobbled by the coils of their nefarious designs to dare reveal themselves, to investigate the cause of that thunderous summons? Or were they, perhaps, aware of Kirkwood's entrance, and lying perdui, in some dark corner, to ambush him as he passed?

True, that were hardly like the girl. True, on the other hand, it were possible that she had stolen away while Kirkwood was hanging in irresolution by the passage to Quadrant Mews. Again, the space of time between Kirkwood's dismissal and his return had been exceedingly brief; whatever her errand, she could hardly have fulfilled it and escaped. At that moment she might be in the power and at the mercy of him who had followed her; providing he were not friendly. And in that case, what torment and what peril might not be hers?

Spurred by solicitude, the young man put personal apprehensions in his pocket and forgot them, cautiously picking his way through the gloom to the foot of the stairs. There, by the newel-post, he paused. Darkness walled him about. Overhead the steps vanished in a well of blackness; he could not even see the ceiling; his eyes ached with futile effort to fathom the unknown; his ears rang with unrewarded strain of listening. The silence hung inviolate, profound.

Slowly he began to ascend, a hand following the balusters, the other with his cane exploring the obscurity before him. On the steps, a carpet, thick and heavy, muffled his footfalls. He moved noiselessly. Towards the top the staircase curved, and presently a foot that groped for a higher level failed to find it. Again he halted, acutely distrustful.

Nothing happened.

He went on, guided by the balustrade, passing three doors, all open, through which the undefined proportions of a drawing-room and boudoir were barely suggested in a ghostly dusk. By each he paused, listening, hearing nothing.

His foot struck with a deadened thud against the bottom step of the second flight, and his pulses fluttered wildly for a moment. Two minutes—three—he waited in suspense. From above came no sound. He went on, as before, save that twice a step yielded, complaining, to his weight. Toward the top the close air, like the darkness, seemed to weigh more heavily upon his consciousness; little drops of perspiration started out on his forehead, his scalp tingled, his mouth was hot and dry, he felt as if stifled.

Again the raised foot found no level higher than its fellows. He stopped and held his breath, oppressed by a conviction that some one was near him. Confirmation of this came startlingly—an eerie whisper in the night, so close to him that he fancied he could feel the disturbed air fanning his face.

"Is it you, Eccles?" He had no answer ready. The voice was masculine, if he analyzed it correctly. Dumb and stupid he stood poised upon the point of panic.

"Eccles, is it you?"

The whisper was both shrill and shaky. As it ceased Kirkwood was half blinded by a flash of light, striking him squarely in the eyes. Involuntarily he shrank back a pace, to the first step from the top. Instantaneously the light was eclipsed.

"Halt or—or I fire!"

By now he realized that he had been scrutinized by the aid of an electric hand-lamp. The tremulous whisper told him something else—that the speaker suffered from nerves as high-strung as his own. The knowledge gave him inspiration. He cried at a venture, in a guarded voice, "Hands up!"—and struck out smartly with his stick. Its ferrule impinged upon something soft but heavy. Simultaneously he heard a low, frightened cry, the cane was swept aside, a blow landed glancingly on his shoulder, and he was carried fairly off his feet by the weight of a man hurled bodily upon him with staggering force and passion. Reeling, he was borne back and down a step or two, and then,—choking on an oath,—dropped his cane and with one hand caught the balusters, while the other tore ineffectually at wrists of hands that clutched his throat. So, for a space, the two hung, panting and struggling.

Then endeavoring to swing his shoulders over against the wall, Kirkwood released his grip on the hand-rail and stumbled on the stairs, throwing his antagonist out of balance. The latter plunged downward, dragging Kirkwood with him. Clawing, kicking, grappling, they went to the bottom, jolted violently by each step; but long before the last was reached, Kirkwood's throat was free.

Throwing himself off, he got to his feet and grasped the railing for support; then waited, panting, trying to get his bearings. Himself painfully shaken and bruised, he shrewdly surmised that his assailant had fared as ill, if not worse. And, in point of fact, the man lay with neither move nor moan, still as death at the American's feet.

And once more silence had folded its wings over Number 9, Frognall Street.

More conscious of that terrifying, motionless presence beneath him, than able to distinguish it by power of vision, he endured interminable minutes of trembling horror, in a witless daze, before he thought of his match-box. Immediately he found it and struck a light. As the wood caught and the bright small flame leaped in the pent air, he leaned forward, over the body, breathlessly dreading what he must discover.

The man lay quiet, head upon the floor, legs and hips on the stairs. One arm had fallen over his face, hiding the upper half. The hand gleamed white and delicate as a woman's. His chin was smooth and round, his lips thin and petulant. Beneath his top-coat, evening dress clothed a short and slender figure. Nothing whatever of his appearance suggested the burly ruffian, the midnight marauder; he seemed little more than a boy old enough to dress for dinner. In his attitude there was something pitifully suggestive of a beaten child, thrown into a corner.

Conscience-smitten and amazed Kirkwood stared on until, without warning, the match flickered and went out. Then, straightening up with an exclamation at once of annoyance and concern, he rattled the box; it made no sound,—was empty. In disgust he swore it was the devil's own luck, that he should run out of vestas at a time so critical. He could not even say whether the fellow was dead, unconscious, or simply shamming. He had little idea of his looks; and to be able to identify him might save a deal of trouble at some future time,—since he, Kirkwood, seemed so little able to disengage himself from the clutches of this insane adventure! And the girl—. what had become of her? How could he continue to search for her, without lights or guide, through all those silent rooms, whose walls might inclose a hundred hidden dangers in that house of mystery?

But he debated only briefly. His blood was young, and it was hot; it was quite plain to him that he could not withdraw and retain his self-respect. If the girl was there to be found, most assuredly, he must find her. The hand-lamp that had dazzled him at the head of the stairs should be his aid, now that he thought of it,—and providing he was able to find it.

In the scramble on the stairs he had lost his hat, but he remembered that the vesta's short-lived light had discovered this on the floor beyond the man's body. Carefully stepping across the latter he recovered his head-gear, and then, kneeling, listened with an ear close to the fellow's face. A softly regular beat of breathing reassured him. Half rising, he caught the body beneath the armpits, lifting and dragging it off the staircase; and knelt again, to feel of each pocket in the man's clothing, partly as an obvious precaution, to relieve him of his advertised revolver against an untimely wakening, partly to see if he had the lamp about him.

The search proved fruitless. Kirkwood suspected that the weapon, like his own, had existed only in his victim's ready imagination. As for the lamp, in the act of rising he struck it with his foot, and picked it up.

It felt like a metal tube a couple of inches in diameter, a foot or so in length, passably heavy. He fumbled with it impatiently. "However the dickens," he wondered audibly, "does the infernal machine work?" As it happened, the thing worked with disconcerting abruptness as his untrained fingers fell hapchance on the spring. A sudden glare again smote him in the face, and at the same instant, from a point not a yard away, apparently, an inarticulate cry rang out upon the stillness.

Heart in his mouth, he stepped back, lowering the lamp (which impishly went out) and lifting a protecting forearm.

"Who's that?" he demanded harshly.

A strangled sob of terror answered him, blurred by a swift rush of skirts, and in a breath his shattered nerves quieted and a glimmer of common sense penetrated the murk anger and fear had bred in his brain. He understood, and stepped forward, catching blindly at the darkness with eager hands.

"Miss Calendar!" he cried guardedly. "Miss Calendar, it is I—Philip Kirkwood!"

There was a second sob, of another caliber than the first; timid fingers brushed his, and a hand, warm and fragile, closed upon his own in a passion of relief and gratitude.

"Oh, I am so g-glad!" It was Dorothy Calendar's voice, beyond mistake. "I—I didn't know what t-to t-think.... When the light struck your face I was sure it was you, but when I called, you answered in a voice so strange,—not like yours at all! ... Tell me," she pleaded, with palpable effort to steady herself; "what has happened?"

"I think, perhaps," said Kirkwood uneasily, again troubled by his racing pulses, "perhaps you can do that better than I."

"Oh!" said the voice guiltily; her fingers trembled on his, and were gently withdrawn. "I was so frightened," she confessed after a little pause, "so frightened that I hardly understand ... But you? How did you—?"

"I worried about you," he replied, in a tone absurdly apologetic. "Somehow it didn't seem right. It was none of my business, of course, but ... I couldn't help coming back. This fellow, whoever he is—don't worry; he's unconscious—slipped into the house in a manner that seemed to me suspicious. I hardly know why I followed, except that he left the door an open invitation to interference ..."

"I can't be thankful enough," she told him warmly, "that you did interfere. You have indeed saved me from ..."

"Yes?"

"I don't know what. If I knew the man—"

"You don't know him?"

"I can't even guess. The light—?"

She paused inquiringly. Kirkwood fumbled with the lamp, but, whether its rude handling had impaired some vital part of the mechanism, or whether the batteries through much use were worn out, he was able to elicit only one feeble glow, which was instantly smothered by the darkness.

"It's no use," he confessed. "The thing's gone wrong."

"Have you a match?"

"I used my last before I got hold of this."

"Oh," she commented, discouraged. "Have you any notion what he looks like?"

Kirkwood thought briefly. "Raffles," he replied with a chuckle. "He looks like an amateurish and very callow Raffles. He's in dress clothes, you know."

"I wonder!" There was a nuance of profound bewilderment in her exclamation. Then: "He knocked against something in the hall—a chair, I presume; at all events, I heard that and put out the light. I was ... in the room above the drawing-room, you see. I stole down to this floor—was there, in the corner by the stairs when he passed within six inches, and never guessed it. Then, when he got on the next floor, I started on; but you came in. I slipped into the drawing-room and crouched behind a chair. You went on, but I dared not move until ... And then I heard some one cry out, and you fell down the stairs together. I hope you were not hurt—?"

"Nothing worth mention; but he must have got a pretty stiff knock, to lay him out so completely." Kirkwood stirred the body with his toe, but the man made no sign. "Dead to the world ... And now, Miss Calendar?"

If she answered, he did not hear; for on the heels of his query banged the knocker down below; and thereafter crash followed crash, brewing a deep and sullen thundering to rouse the echoes and send them rolling, like voices of enraged ghosts, through the lonely rooms.