It was yet another Lady Vera who brought her own sunshine out of the weeping dusk of that October morning. To veil embarrassment on either side, Dollar had switched off the light by which he had just read the line scribbled on her card; but there was no sanction for his nervous sensibility in the little picture he beheld next moment. An audacious study in Venetian red—a tripping fashion-plate with a practical waist—it was only Vera by virtue of the radiant face between the donkey-eared toque and the modish modicum of fur. And though the radiance was lovely as ever in his eyes, and lovelier still as a surprise, this frivolous modernity was pain and puzzledom to Dollar until their hands met, and the one in the tight glove trembled.

"It's no use beating about the bush," said Vera Moyle, and there was no sort of tremor in her voice. "Do you mind telling me exactly what you know of a Mr. Mostyn Scarth?"

"Mostyn Scarth!" cried Dollar. "Do you know him?"

"Only too well!"

"I was afraid of it."

"But I want your opinion and experience of him first. I believe you saw something of each other in Switzerland?"

"We did," replied Dollar weightily. "He was supposed to be looking after a young temporary lunatic, who was of age, rich, and not irresponsible in the eye of the law. Scarth induced the boy to leave him vast sums of money in a will, and then made two distinct attempts to murder him."

"No!"

"He did. You ask what I know of this man, and I make no bones about telling you. It's a thing the whole world ought to know for its protection. He made two separate attempts on the lad's life, the last more ingenious than the first; first he tried to poison him by means of a forged prescription, and next to break his neck by tampering with his toboggan."

"In Switzerland, when you were there?"

"I was sent for after the first effort; the second was made under my nose."

"And yet you did nothing?"

Lady Vera's indignation was not confined to the absent miscreant; her demigod came in for his share.

"There was not much to be done," he protested humbly. "We were in a foreign country; the evidence wouldn't have been overwhelming under our own law. I let Scarth know that I had found him out, got the boy out of his clutches—pulled him together all right—and laid the whole case before Topham Vinson when I came home. He consulted his law officers; they thought I had so little to go upon that our man wasn't even marked down for surveillance by the police. I had to keep my own eye on him when he turned up in town again. Scarth made that easy by immediately getting on my tracks, and discovering in Mr. Croucher another old friend who had his knife in me. They tried between them to pervert my chauffeur; then I lost sight of them; and it was then I wanted to put you on your guard, but you were never in, and my letters seemed to miscarry."

"They didn't," said Lady Vera, with frank contrition. "I am ashamed to tell you why I never answered them; but I will in a minute. So it was Mr. Scarth you meant when you told me the other day that poor Croucher had fallen into such bad hands?"

"Poor Croucher! Yes, it was; and there really is no comparison between them. One was born in the scarlet, so to speak, but the other's the only really educated and quite cold-blooded villain I have ever met."

Vera Moyle sat forward in the patient's chair, in the very attitude of two years before, with the same firelight illumining the same steadfast look of moral and intellectual honesty; and the fuller health upon her cheek, the deeper wisdom in her eyes, made no more difference to Dollar than her superfluous smartness now. She was the same utterly candid creature, about to tell him the whole truth about some fresh trouble, and extenuate nothing that concerned herself.

"I don't want to waste many words on Mr. Scarth," she began, in the least vindictive of human voices; "but I ought to tell you that I quite liked him until the other day. I met him first at a country house where he was supposed to be tutoring the boys, but was really the life and soul of the whole party. It was extraordinary how he ran everything and everybody for those people; we were all devoted to him, and he says I asked him to come and see us in town, but he certainly never came until near the end of this last season. Then he made up for lost time; he's capital company, as you know, and we had him to dinner, and my eldest brother asked him down to stay in August when I was there. That was when we saw most of each other, and Mr. Scarth asked me to marry him——"

"Good God!"

"Of course I didn't like him well enough for that, though he had put me against you!"

"How?" said Dollar grimly. She was still peering into the fire; but he flattered himself there was more than firelight in the flush that almost rivaled the Venetian red still nearer to the bars.

"He knows what I did two years ago."

"Croucher, of course?"

"He said it was you—that you gave me away to him in Switzerland!"

"And you believed him?"

"He made it just credible. He said you told him in confidence; he showed me a letter in which you reminded him not to let it go any further."

"A forgery!"

"I see that now; but it was a very good one, written on your club paper."

"The man's an expert forger. Anybody can go into a club to write a note and steal some stationery. If only you had tackled me about it!"

"I promised I wouldn't. I could hardly believe it of you, all the same—not that you were the first to tell him. But—but it did put me off—in spite of everything—and that was only in July."

"Just when I was trying to see you, to put you on your guard!"

She gave him her eyes at last, and they were wet but beaming. "I doubted it still more from one or two things he said when we had our little scene in the country; but I knew there wasn't a word of truth in it before you said a dozen words to me the other Sunday! It was all a plot to keep us apart—to get me under his thumb."

"Did he threaten you when you—had your little scene?"

"Not in so many words."

"He will. That's where I shall come in."

"His position was that I and my secret would only be safe with him."

"As it never was with me?"

"That was it; but now he knows that I don't believe him. I told him so when he called last week."

"So you have had another little scene?"

"I cut it short at that."

"And there the matter ended?"

"Between him and me."

"Don't make too sure. You don't know your Mostyn Scarth as well as I do. I wonder what his next move will be!"

The wonder lit the doctor's face with eager interest, but brighter still was the answering light under the toque with the ass's ears of watered silk.

"I don't know about his next, but I can tell you what his latest move is," said Lady Vera. "He has taken to dogging me all over the place, to see if I don't commit another crime! He was one of the alleged detectives at Pax Monktons Chase!"

"Never!" cried Dollar, taken fairly by surprise. He had forgot almost every feature of the affair in question, except how magnificently Vera Moyle had come out of it. The episode remained in his mind only as the one great dream of his that had come true as yet; the details had disappeared like those of any other dream.

"I happen to know it," said Lady Vera, with some little embarrassment. "I had it from—the other detective."

"Not—" and Dollar stopped to frown—"not Croucher himself?"

"Yes."

"He has dared to speak to you!"

"For the very first time since that night in the train; now do listen, and be fair to the poor fellow. He never was as bad as you thought him; you say yourself that he's a saint compared with Mr. Scarth." Dollar was too savage to smile at this free version of what he had said. "Well, they have fallen out, and Croucher's in a bad way altogether; and he has turned to me for a helping hand—not for money or anything of that kind."

"Not the least little hint of blackmail?"

"Not a word or a sign of anything of the sort, except that he asked me to forgive him for the other time, and of course I did."

"Of course you would, though he actually robbed you under arms!" cried Dollar, as sardonically as he felt he must.

But he was let off with the caution of a frown that would have escaped attention on a face less consistently serene than Lady Vera Moyle's.

"You forget what he had been through first," said she, gently. "Within forty-eight hours of execution, for something he had never done! Thinking what he thought, and I neither denied nor admitted, then or at any time, the wonder is not that he behaved as badly as he did that night, but as well as he has ever since. However much you frightened him at the time, he might have gone on blackmailing me without your knowledge, and that's the last thing he's trying to do now. But I want to do something for him! You say yourself that he has fallen into the worst of hands—well, I want to get him out of them. You once told me that, when you had him here before, you found yourself trying to make a decent being of him, and beginning to feel that you might almost succeed. Doctor, I want you to try again, for my sake! He is frightfully sorry for what he did before, and he has been very badly used by Mostyn Scarth. He looks ill. I want you to save his life, and more than his life! He has told me with tears in his eyes that he was never so happy as when you had him here before. Dear man, do take him in again, and give him one more chance, to please me!"

Her voice had broken, and for once her eyes had played her false as well, and Dollar had waited grimly while she recovered her voice or dried her eyes. But he could not answer grimly when in her turn she waited for him to speak. In her frivolous little blazing skirt, in the toque that he liked even less; over-dressy as he dared to think her in his simple heart of hearts, she appealed to him the more profoundly for those very vanities, so far from vanity were the letter and the spirit of her intercession.

"So you really came to see me about Alfred Croucher?" said Dollar, but very gently, without the faintest accent of reproach.

"It was about both of them, but chiefly about him," she admitted. "Of course I wanted to check his account of Mr. Scarth. If you had given him a good character, that would have been the end; but you gave him a much worse one than I expected. Croucher seems almost immaculate by comparison; honestly, I shouldn't wonder if he were less lost to decency through his very association with a man so much worse than himself."

"Did he tell you so?"

"He said it had brought him up with a round turn."

"It's possible," said Dollar, not more dryly than he could help. "The psychology is all right." He was smiling and nodding now. "And where is Mr. Croucher at the moment?"

"Walking up and down outside."

"Until we call him in?"

"If only you will let me!"

She was on her feet, to take him at his word as soon as spoken; but he said that was Barton's job, and, wondering aloud how Barton would like it, went out presumably to see. He was not gone long, and in another minute Alfred Croucher was cringing before them like a beaten cur.

But few curs whine as this one did that morning, while the crime doctor listened and their little lady winced. She was right about one thing. He did look ill; his cough was not altogether put on. He had been "tret somefink crool," he declared, but without entering into particulars, for which Dollar did not press; but on the character of Mostyn Scarth there were no such reservations. Croucher denounced that monster with the white hatred of a holy warrior, casting up his eyes with all manner of passionate and pious invocations.

"Only take me away from 'im, before it's too late!" he implored, reluctant murder in the whites of his rolling eyes. "'E's a bad man, a very bad man 'e is! The 'appiest days o' me life was wot I spent in 'ere eighteen munf ago. It seems more like eighteen years—'ard. I never should've quit but for Shod, wot's got a good long stretch for 'is pines. 'E's another bad man; but for 'im you 'ad me in the 'oller of yer 'and, and might 've made a man o' me in no time."

"Yet you went straight from me to threaten and rob the lady who sent you here!"

It was a dangerous opening, but Croucher did not take it. In ignoble emotion he fell upon the knees of a flash pair of trousers, which still showed the track of an ineradicable crease, and once more sued for the mercy and forgiveness already vouchsafed to him. And Lady Vera turned from the sly, leering, blinking, darting eyes to a pair turned hard as nails, and the harder for an oblique inner twinkle all their own.

"All right!" snapped Dollar, to her intense relief. "I'll take you in, Croucher, for better or worse. Well make it for better, if we can; but do get to your two legs, man, instead of fawning on all four! Are you free to stop as you are, or is there anything you want to settle up first?"

"There's me rooms," said Croucher, eagerly. "There's nuffink worth fetching, but I shouldn't like to bilk the people, 'speshly w'en 'er lidyship's gawn an' give me the money, Gawd bless 'er!"

Dollar precipitated the creature's exit, on the verge of fresh saurian tears, of which there were further signs for his benefit on the mat. He might be a bad man, too, might Mr. Croucher, but he wasn't as bad as Mostyn Scarth. And in that modest claim, at least, there was a bitter sincerity which received its due in a nod of keen acknowledgment.

"I never did think you were more than a second murderer, Croucher!"

"Wot's that?"

The whites of those quick, furtive eyes were showing quite horribly in a moment.

"Only a technical expression, Croucher, meaning the minor malefactor."

And he returned rather slowly into the eager presence of Lady Vera Moyle.

"I suppose I mustn't fawn, either," she said, in the softened tone of one of her rare rebukes. "But—do you think you can make anything of him—this time?"

"I hope so; but I shall be very glad to have him back, even if I fail again."

"Why?"

The crime doctor gave her another of his oblique smiles.

"I shall be all the better able to watch Scarth's latest move," he said.

II

Over against the back windows of a nice new street of tall red houses, beyond the high red wall enclosing their common strip of shrubs and gravel, runs a humbler row of windows in connection with a mews. In one you may still catch a coachman shaving for the box, but more likely a chauffeur's lady engrossed in her novelette; and on the next sill are pots of geraniums, while the next but one keeps the evening's kippers nice and fresh. Most of the windows have muslin curtains, and in some the lights are on all night. Last October there was only one without any kind of covering, except a newspaper stuck across a broken pane.

It was the scandal of the row; a battered billycock lay rotting on the roof above; strange fragments of song were always liable to burst from within, as of a gentleman roistering in his sleep, and at times a bristly countenance would roll red eyes over the backs of the red houses, beginning and ending with the flats at the bottom of the street. If a dark handsome face appeared simultaneously at a top flat window, the chances were that both would vanish, but it would have been difficult to detect the exchange of actual signals.

On the return of Alfred Croucher, shaven and collared, from the audience in Welbeck Street, he went so far as to wink and wave from the window that disgraced the mews to the one that crowned the flats. His rolling eyes still had their whites about them; his wrists were still in unaccustomed cuffs; and Mostyn Scarth was at his elbow before it could be lifted with the bottle brought in to celebrate the occasion.

"Just one!" said Croucher, pitching his mongrel whine in the key of comic extravaganza. "I deserve all ten fingers for what I got to tell yer!"

"Not a drop, my Lazarus!" said Scarth. "When do you move in?"

"To-day—now."

"You shall have the whole bottle when you come out. You may want it. What about that stamped note-paper?"

"Couldn't lay 'ands on a scrap."

"Hadn't you the waiting-room to yourself?"

"My witin'-room was the street, gov'nor."

"Well, I must have a sheet or two as soon as you can stick them in the post; three or four would be safer, and at least a couple of his envelopes, in case of accidents. Now tell me everything that happened; and perhaps you shall have a drink before you go."

There was no light that night in the window with the broken pane pasted over with newspaper; next day it was mended properly, and the sodden billycock removed from the roof before Alfred Croucher awoke from his innocent and protracted slumbers in the crime doctor's patent chamber of perpetual peace.

His first impression was that some mysterious miracle had been performed expressly for his behoof. He must have been drunk to have slept so sound, and yet he had none of the disagreeable sensations which a long experience associated with the ordinary orgy. He felt profoundly rested and refreshed; never had he lain in so luxurious a bed; and the air was faintly scented, subtly soothing, and there was plenty of it, yet not a sound except the gentle stirring of his own breathing body between the sheets. His palate was clean and cool beyond belief. He opened his eyes, and saw a plain room sharp as crystal to the sight: not the bronze bedchamber that he suddenly remembered, but the same place steeped in purest sunshine, and ten thousand times fairer for the change.

Then he knew where he was, and precisely why he was there; and it was the mental equivalent of what Mr. Croucher called "'ot coppers," only this made him hot all over. He might have been in a fever; he hoped violently that he was. He remembered his cough, and began to practise it. A determined paroxysm revived his spirits; he was not fit to get up, and other people would just have to wait until he was, and serve 'em jolly well right!

Other people couldn't get at him there; yet one other person could, and did, to Mr. Croucher's mingled discomfort and relief. The doctor duly kept him in bed; but there was too much of the doctor; and yet the time hung heaviest when he was not there, and there were heavier burdens even than the time. The patient had lost his liking for a book. Conversation was more to his taste this time. His mind would wander when he read. It would follow the doctor down-stairs to his consulting-room, or across the landing to the room in which he slept. The man haunted him; it was better to have him there in the flesh, than to see him as Croucher continually saw him when he was not there at all.

Better, again, to talk of some things than to dwell on them night and day, especially when those subjects seemed to possess an equally awful fascination for the crime doctor. Of course, they were in his line; that accounted for the doctor's morbid taste, and the patient's most terrible experience was quite enough to account for his. There was nothing unnatural in their talks. They had the thing in common, only from opposite poles of experience, which enormously enhanced the mutual interest. If there was one subject they were bound to have discussed, with no false delicacy on either side, each being what he was, it was the subject of the sixth commandment.

"Of course you think about it," said Dollar, dismissing an incoherent excuse on the second day. "It must haunt you; it's only natural that it should. All I should like you to do, since you never committed one, and are the last man in the world to commit one now, is to take a rather lighter view of that particular misdeed."

"A lighter view!" repeated Croucher, goggling; and he added with a shuddering inconsequence: "The lor o' the land don't make light of it!"

"Literature has been known to," rejoined the doctor, with as little apparent point. "But you are not the reader you were last year; otherwise there's a little thing, On Murder Considered as One of the Fine Arts, that I should like to lend you."

"One o' the 'ow much?" said Mr. Croucher, uncertain whether to grin, or frown, and meanwhile glaring more than he supposed.

Dollar went for the book, and read a few extracts aloud. They appeared to afford him extraordinary enjoyment; they were altogether over the bullet head on the pillow. Croucher could only gather that some people seemed to imagine it was good sport to commit a murder. Funny fools! Let them try a fortnight in the condemned cell, for one they never did commit, and see how they took to that!

But he could understand them that knew nothing about it writing a lot of rot like this; what beat him was that the crime doctor, of all people, and with all his uncanny knowledge of the subject, that even he was able to view the worst of crimes in a light which would never have dawned on the independent intellect of Alfred Croucher. It seemed to him a more lurid light than any in which he himself, at his worst, had ever seen such things; horrible, to his mind, that one who ran every risk of being murdered should sit there gloating over "the shades of merit" in one murder, and over others as "the sublimest and most entire in their excellence that ever were committed." What was more horrible, however, was the hollow note of Mr. Croucher's own laughter, and the furtive gleaming of his restless eyes, while his body twitched between the sheets.

He asked for the book when Dollar rose to go; and was discovered, in due course, bathed in a perspiration which he made less effort to conceal.

"It ain't all like them funny bits," he assured the doctor, with an open shudder. "There's a bit I struck about a servant gal, on one side of a door, an' a bloke wot's done the 'ole bloomin' family in on the other. My cripes! I 'ad to 'old me breff over that, and it's made me sweat like a pig."

"On which side of the door were you?"

"Wot's that?"

"In your mind's eye, my good fellow!"

Mr. Croucher had seldom found it easier to tell the truth, and he made the most of his opportunity.

"I felt as if I was the gal," said he. "Shouldn't wonder if I dreamt I was 'er to-night!"

"Ah! I always find myself on the inside," said Dollar, with extraordinary gusto. "I'd much rather have been the girl. She had the open street behind her, and the street-lamps; he had only his own handiwork in the dark, and hardly room enough to step out of the way of it. She got away, too, whereas he had to make away with himself. But I always would rather be the victim; he doesn't know what's coming; and it's not a thousandth part as bad as—the other thing—when it does come.... I'm sorry, Croucher! You shouldn't have asked me to leave you the book; but there's nothing like looking at a thing from all sides, and it may console you to know that you've perspired over the best description of a murder ever written."

Yet that was not the last of their morbid conversations; they would hardly be five minutes together before the noxious subject would crop up, nearly always through some reluctant yet irresistible allusion on the patient's part. The doctor might come in overflowing with deliberate gaiety; there was something about him that set the bulbous eyes rolling with uneasy cunning, the cockney tongue wagging in its solitary strain, as it were under protest from the beaded brow.

On one occasion Dollar was the prime offender. It was the day after Croucher's introduction to De Quincey and the first bad night spent by anybody in the Chamber of Peace. He declared he had not slept a wink, and was advised to get up and go for a walk.

"Alone?" said Croucher in a low voice.

"Why not? This isn't prison, and I never hear you cough. You are not going to die just yet, Croucher!"

"I 'ope nobody is, not 'ere," said Croucher, with a horrid twitch. "I feel as it might buck me up—a breff of air on a nice fine day like this." His eyes rolled undecidedly, and the oil ran out of his voice. "But it ain't no fun goin' out alone."

"Haven't you any friends you could go and see?"

"No!" cried Croucher, with an emphasis that pulled him up. "I—I might write a letter, though—if you could spare me a bit o' paper wiv the address."

It was a very short letter that Alfred Croucher wrote, but a remarkably thick envelope that he himself took to the post, after looking many times up and down the street. And at the pillar-box, which was not many yards from the door, he again hesitated sadly before thrusting it in.

In the afternoon Dollar took him out in the car, and then it was that for once the poisonous topic was not introduced by Mr. Croucher.

"See that house?" said Dollar, pointing out one of the most modest in the purlieus of Park Lane. "There was no end of a murder there once. Swiss valet cut his master's throat, made what he flattered himself were the hall-marks of burglars, and had the nerve to go into the room to wake the dead man up next morning."

"Fair swine, eh?" said Mr. Croucher, with all the symptoms of disgust.

"A very fair artist, too," rejoined the disciple of De Quincey. "That wasn't his only good touch. He cut the old gentleman's throat from ear to ear, and yet there wasn't a spot of blood on his garments. How do you suppose he managed that? It's a messy operation, Croucher; you or I would have made a walking shambles of ourselves!"

"How did he manage it?" asked Croucher, in a shaky growl.

"By taking off every stitch before he did the trick. How about that for a tip?"

Croucher made no reply. His teeth were clenched like those of a man bearing physical pain. They were nearly out of town, and Dollar had discoursed upon autumn tints and the nip in the air before being abruptly interrogated as to the "fair swine's" fate.

"Need you ask?" said he. "The poor devil was too clever by half, and made a big mistake for each of his strokes of genius. He was taken, tried, condemned, and all the rest of it! And a greater writer than the gentleman who kept you awake last night wrote the best description of—all the rest of it—in existence. But don't you ask me to lend you that!"

"They always seem to forget somefink," said Alfred Croucher, another long mile out of town.

"The first thing being that the best murders oughtn't to look like murders," the criminologist agreed. "They ought to look like accidents, or suicides at the most. But it takes a Mostyn Scarth to cut as deep as that."

"Wot the 'ell mikes yer fink of 'im?" cried Croucher, in a fury at the very name.

"Well, among other things, the fact that he saw us off in the car just now. Do you mean to say you didn't see through the false beard of the gentleman who was picking up his umbrella as we turned into Wigmore Street?"

III

Never again did Alfred Croucher venture out alone, even as far as the pillar-box; not another letter had he to post, though he received one, wrapped round a stone, once when his window was open, and literally devoured every word. He did go out, but only with the crime doctor in his car, for an hour or two in the afternoon.

More than once they got out at Richmond Park, sent the car across to one of the other gates, and followed at a brisk walk, shoulder to shoulder, with Croucher often peeping over his, but Dollar never. The walk was sometimes broken for as long as it took Croucher to smoke a pipe in one or another of the beautiful wooded enclosures which are the inner glory of the most glorious of all public parks. There, under red canopies of dying leaves, their feet upon a russet carpet of the dead, the smoker would rest in a restless silence, because the one subject which had made him eloquent was now tabooed. Even in the Chamber of Peace there was no peace for Alfred Croucher, and but little sleep, although the doctor had walked him off his legs and would sit beside him till all hours. So the literary and conversational treatment had been altered once for all; and now the patient would hardly read or speak a word.

Late one night, in the second half of the month, the crime doctor, seated like a waxwork in a chair that never creaked, had just made sure that his man was asleep at last. He decided to steal out and write some letters, and take them to the post himself before locking up; and was getting by inches to his catlike feet, when some sense held him bent like a bow. It could hardly have been his hearing, in his own sound-proof sanctuary between double windows and triple doors. Yet suddenly he was all on edge, listening with nerves laid bare by forced vigils in that slumberous room, brown as an Arab in its weird lighting; the silver patch in his hair changed from a florin to a new penny, the whites of his eyes like broad gold rings; their one flaw augmented by an infinite fatigue, their one care the human wreckage on the bed—shattered utterly by him, to be by him built up afresh, but not in the midst of excursions and alarms. And here was the inmost door opening, so softly, so slowly, at deadliest dead of night!

It was a woman who entered like a ghost, and he knew her step, though he could not hear it even now. And though her cloak and head-dress were those of a trained nurse, he knew, rather than saw, that the wearer was Lady Vera Moyle.

"Hush!" she was the first to whisper, and very softly closed the last door, through which he would have hurried her out again. Already her soundless movements, her air of vast precaution, puzzled him even more than her presence or her dress; but he still had anxieties on this side of the door.

"Just asleep," he whispered, pointing to the bed. "Bad time I've given him, poor brute, but a better one coming, I do believe. Did you come to see how he was doing?" Even in the stained light she looked so beaming now, so frankly triumphant, he made sure that was it. "I'd have written, but thought you were away. Who let you in?"

"This!"

And she held up a new Yale key.

"Where did you get it?"

"Specially cut for me." Every line in his red man's face was a note of blank interrogation. "Mostyn Scarth has another—cut specially for him! I've had him watched."

"Vera!"

"I was watching for him—from the nursing home opposite—suffrage friends of mine."

"Why didn't you tell me?"

"You had enough to do."

He shook his head. "Well?"

"He's somewhere in the house."

"This house?"

"Why didn't you tell me?"

She nodded. "Hiding—in your room, I think."

"I'll soon have him out!"

"Wait!" She had eyes for the amber bed at last. "Are you sure he's asleep?"

Dollar stole across and back. The great frame was breathing gently and evenly as a child. "But he's a terribly light sleeper; we mustn't disturb him, if we can help it."

"Disturb him!" She clutched his hand for the first time. "I wish to God I had never brought him to you! There's a plot between them, doctor—I know there's some plot!"

"There was, of course," he said, smiling, but wincing at his own "of course" that instant. "I'm delighted you brought him," he reassured her. "I've taken some of the plot out of him—and now for Mr. Scarth!"

He reached past her to open the door. In a flash she put something in his hand. It was a showy little revolver, the handle mother-of-pearl, the barrel golden in that light.

"Thanks," he said-briefly—but there was a whole novel in his look. "Now will you do something more for me?"

"No!" she said flatly, and was at his elbow when he opened his own door across the landing.

It was such a plain little room that there was indeed small danger of a surprise from the concealed intruder. The only possible cover was under the bed, behind the curtains, or in the wardrobe. Dollar just went through the form of glancing under the bed, as he whipped up the poker in his left hand; with it he parted the curtains, and in the same second had his man comfortably covered at arm's length.

"Well done!" cried the girl.

Scarth repaid her with a gleam of saturnine enlightenment; it was the first change in his swarthy, unemotional, unconquerable visage. On the Balkan battle-fields there may have been myriads of such faces, not with the unique intellectual quality of this one, but alike in their fierce contempt of battle, murder, and sudden death, as little matters not worth a qualm, whether in the active or the passive party to the business. Among educated Englishmen the temperament is rare, and rarer still the mental attitude; in the combination lie the makings of the hell-born villain, and Mostyn Scarth was the finished article.

Stoical in his discomfiture, he saw his opening with no more than a glitter of his insolent eyes, and took it as though he had never foreseen anything else.

"So I've caught you both out, my virtuous friends!" said he. "And you dare to present that thing at me, as though I were here for a felonious purpose!"

"I shall not empty it into you, Scarth, however much you may tempt me," replied the crime doctor. "What do you say to clasping both hands behind your head and leading the way down-stairs?"

"I'll see you damned first," said Mostyn Scarth.

"Good! It's exactly the same to me, only you may find it harder not to take one of those hands out of your trousers pockets, and the moment you show a finger I shall cripple you for life. I thought, too, that you might like to hear what we say to the police."

"I don't take the faintest interest in what you say to them," returned Scarth, with a broader gleam to light his meaning.

"Good again! Do you mind going down and ringing up New Scotland Yard, Lady Vera? On your way you might please see if all three doors are shut in the room opposite; then, perhaps—no! I should leave this one open after all, I think." Three seconds had sufficed to close the triple doors, one more quickly than another, behind them.

"I should, if I were you," said Scarth. "And I should think a good many times before carrying out your other instructions—if I were the lady at the bottom of one of the few mysteries that still puzzle Scotland Yard."

There was a pause, in which Dollar heard only a sharp intake of breath on the threshold just behind him; but that was enough.

"I believe I shall have to shoot you, after all," said he, and the hammer of the mother-of-pearl revolver clicked to full cock.

"Won't that rather spoil your game?" said Scarth, blandly.

"Mine is not the game that matters at the moment—yours is. As, however, you have been fool enough to have a key cut expressly to fit my front-door lock, and have been discovered in my room at midnight——"

"In the most distinguished company! Go on, Dollar. Nothing extenuate—bang the field-piece—twang the lyre!"

His teeth were showing as they had shown on the platform at Winterwald nine months before; the tag from his famous impersonation had slipped out with all the snap and gusto which had captivated an unruly audience then; and it was not without a slight mesmeric effect on the man who had him at his mercy. If Scarth in turn had not held Vera Moyle at his mercy, and if John Dollar had not known him to be utterly devoid of that quality, he could have admired the cool daredevil, swaggering at bay.

"Remember the concert at Winterwald, doctor," he went on, "and our talk afterward, and the last talk we ever had there? He thought I had two tries to kill a fellow, Lady Vera—two bites at such a green young nut! Better to finish 'em off at one fell blow, isn't it? Not such fun for the widow, or the poor innocent devil who nearly swings for the job, but great work for the militant Millies and their lady leader! Splendid for you all until the truth comes out—as it will the minute a policeman shows his nose!"

It was Lady Vera who had obtained him this hearing. She had stepped up to Dollar, had taken his arm, had even put her other hand in front of her own revolver.

"Let him go on; we may as well know where we are," she had said in the middle of Scarth's speech. And now she asked him what he proposed, as if she were inquiring the price of a dress, with the civility doubly due to an inferior.

"You have had my proposal," said Scarth. "It's not the kind that one repeats before a third party."

"I may as well ring them up," said Lady Vera, trying to disengage her arm; but Dollar's had closed upon it, and his left hand held hers as in a vise.

"You shan't!" he ground out. "It's all bluff. They have no evidence."

"They are welcome to all I can give them," she answered. "I have always regretted I didn't come forward in the beginning. But there was more excuse than there is now—then there was no question of letting a worse person go for the second time."

But this was not said for the worse person's benefit; for the Vera Moyles it is impossible to speak at the worst person in the world. The point was merely urged as an argument for Dollar's private ear. But the Mostyn Scarths are expert listeners; not a syllable was lost upon the consummate chieftain of that foul family; and he grinned gaily through as much of the open door as he could see from this point.

"So you admit that you administered his coup de grace to the late lamented Sergeant Simpkins?"

But the heavy shaft was not winged by one of Mostyn Scarth's feathered glances. His grinning gaze still sped past them to the landing.

"I have never denied it in my life."

"Hear that, Croucher?" cried Scarth. "'Full confession by Lady Vera Moyle—extry spechul.'"

The pair stood closer as one of them looked round; and there, indeed, on the threshold, bulked Alfred Croucher, larger than life in a white bathgown that sat better on him than his loudest clothes. And his unwholesome face looked only a shade less white than all the rest of him, but for the little red sleepless eyes fixed on Mostyn Scarth, who still enjoyed the crime doctor's undivided attention.

"'Ow the 'ell did you get 'ere?" said Croucher huskily.

"I'm obliged to you for asking. Our virtuous friends are so ready to take a felony for granted, that it seems never to have occurred to them that I walked in at the door—partly to see you—chiefly to bowl them out." Lady Vera could not help smiling at that which seemed never to have occurred to her; nothing else left any mark, save upon John Dollar, on whom Scarth now trained his ivory grin. "The worst of a Yale lock, doctor," he went on, "is that all the keys are numbered; the worst of a Turkish bath is that your enemy may do that thing, and have a look at your latch-key if you will leave it in your pocket on its chain. Northumberland Avenue may be a good place after a bad night, but that's where I really found my way into your house. You didn't see me because I had the bad taste to prefer the cave of electricity to the public hot-rooms and your capital company."

The note of insolence had been forced for Croucher's benefit, the libretto elaborated to impress that elemental mind, and it was to Croucher that Scarth turned for applause. It might have been more articulate; there was little merriment in the guttural laugh; and it was not in open mockery, if not with any visible respect, that the little red eyes sought the silent object of these insults.

Dollar met them for a moment with a sidelong flash; that was as much as the little red eyes could stand. Scarth glowered, but Mr. Croucher was not looking up any more. Between the two strong men, one spitting insults with his tongue, the other darting questions with his eyes, flabby Croucher found it convenient to study the toes of his bedroom slippers. But his right hand shook deep in the far pocket of the voluminous bathgown. None of them saw that but Mostyn Scarth, and him it filled with gleaming confidence.

"Come, Alfred," said he, "get into your street clothes, if they haven't been taken away from you. If they have, go down as you are and call a taxi. I'm going to take you out of this hole. You look more dead than alive. I thought you might; that's one reason why I came."

"Croucher is going to do something for me first," said the crime doctor. "Then he can do what he likes."

"Sorry you haven't got a soul to call your own, Alfred."

"Who says I haven't?"

"Doctor Dollar. Didn't you hear him?"

"If he does, he's a——"

"Croucher! Croucher!" said the doctor. "All I want you to do is to hand me the razor case from the dressing-table. In fact you needn't do all that; just arm yourself with the weapon you ought to find there. Then somebody will be more of a match for me. And Mr. Scarth isn't raising any further objection, you will notice."

What Croucher noticed, as the red eyes came up at last, was that Mostyn Scarth had suddenly lost a little of his usual healthy tan; but the bedroom slippers remained planted where they were.

And then without a word Lady Vera stepped from the doctor's side, took the razor-case in both her hands, pulled it in two and exhibited the empty halves.

"Which of you has borrowed my razor?" said John Dollar.

"Not me!" cried Croucher with tremendous emphasis. But his right hand was still in his far pocket, as only Mostyn Scarth could see; and the sight restored a little of that healthy tan which so becomes dark faces.

"Not you, Croucher?"

"No, not me, by Gawd!"

"Yet I believe your original mission in this house was to possess yourself of that razor—and—use it?"

Dollar did not finish the sentence without feeling for a little hand with his left; that little hand met it half-way, and was the first to give a reassuring squeeze.

"You were to do something to me with it, I believe, and to leave it in my hand to show I'd done it myself?"

And then, under another sidelong flash, that steadied down into a will-destroying gleam, Croucher came out with a dreadful phrase.

"To guide yer 'and!" said he, hoarsely.

"To guide my hand! Exactly! But it was not exactly your idea?"

"No. It was——"

But here his eyes rolled into Mostyn Scarth's, and dropped once more.

"Exactly!" repeated Dollar. "But you didn't quite feel like doing it, so at last your master had to come in to do it for you?"

"He ain't my master now, blast 'im!"

"Steady, Croucher. May I ask what that is in your hand?"

It was a letter. Only a letter out of that far pocket, after all! Scarth's eyes started, and he found his tongue once more.

"You—give—that—to me, Croucher!"

Croucher wavered at his voice; it was terribly threatening, each subtle tone a poisoned barb.

"What if I don't?"

"You know what!"

"The game deepens," said the crime doctor; and he did not know that his left hand had dropped the hand of hands for him.

"Your game's up if you show that letter!" cried Scarth to Croucher, who only showed him the broad of his back.

"Can you be tried twice for the same thing, doctor?" he began—but in the same breath he desperately added: "I don't care whether you can or you can't! You read that, whether or no!"

The letter was in an envelope superscribed "To the Coroner," in a wonderful imitation of Dollar's handwriting; but the letter itself, written on his own stamped paper, was a still more marvelous forgery, in which the crime doctor bade farewell to the world before stultifying his own life's work by the crime of suicide.

"That's better than anything you did in Switzerland," said Dollar, nodding to the livid man between the curtains.

"But it ain't the best thing 'e's done," cried Croucher, and stopped to roll his eyes and gloat. "The bounder's best bit was squeezin' two people for the same job—the guilty an' the innercent—'er as thought she must 've done it, an' 'im as knew 'e done it all the time!"

"That's the end of you," said Scarth, with sardonic satisfaction.

"It's the beginning of us all!" said the crime doctor, in a voice they hardly knew. "Do you—can you mean yourself and this lady?"

That lady shook her head and smiled.

"I do, if I swing to-morrow!" swore Alfred Croucher. "I told 'im"—with a truculent thrust of the bullet head—"one night in me cups; an' fust 'e starts squeezin' 'er to marry 'im, an' then squeezin' me to do yer in before yer forbids 'is banns! Oh, 'e's a nut, I tell yer—though we've been the nuts an' 'im the cracker!"

Lady Vera looked like a little ghost, still unable to believe her ears, still staring into space as if the trouble were rather with those great Irish eyes of hers.

But the doctor was the doctor an instant longer. His left hand went out to his patient first.

"You'll sleep to-night! I'll give you the other when it's free," he said, still covering the man with his hands in his pockets, the curtains on each side of him, and a back window just behind.

Then two things happened in quick succession; but the first brought the lover back to life with such a throb that the second was not even seen.

Just saying, "I'm afraid I'm going to make a fool of myself," all that he loved on earth collapsed at his feet. The doctor was down on his knees beside her, getting the girl into his arms. And even Mr. Croucher did not see the curtains close, or hear anything happen behind them; for he, too, was on his knees, holding out a dripping sponge, and babbling faster than the drops pattered on the floor.

"It's right! I done it ... that pore copper in the fog! She sent 'im reelin'—into me arms—but I done all the rest. Never meant to, mind yer, but that's neither here nor there. Ready to swing, I was, an' don't care now if I do! She saved me—little knock-out—an' look 'ow I went an' tret 'er for it!... Gawd, doctor, wot a fair swine I was!"

But the crime doctor had even less time to listen to him now; for the eyes of eyes had opened, were gazing up into his; and not one of them had heard the window raised behind the curtains, or the clanging thud upon the iron steps just underneath.

THE END