The three searchers into what was rapidly becoming a most complicated mystery drove back to New Scotland Yard in a silence which lasted until they were set down at the door of the department whereat they had interviewed the high official. Celia Lennard was thoroughly upset; the sight of the dead woman had disturbed her even more than she let her companions see; she remained dumb and rigid, staring straight before her as if she still gazed on the white face set in its frame of dark hair. Allerdyke, too, stared at the crowds in the streets as if they were abstract visions—his keen brain felt dazed and mystified by this accumulation of strange events. And Fullaway, active and mercurial though he was, made no attempt at conversation—he sat with knitted forehead, trying to think, to account, to surmise, only conscious that he was up against a bigger mystery than life had ever shown him up to then.

The detective who had accompanied them to the mortuary conducted the three straight back to his chief's office—the chief, noticing the effect of the visit on Celia, hastened to give her a chair at the side of his desk, and looked at her with a lessening of his official manner. He signed to the other two to sit down, and motioned the detective to remain. Then he turned to Celia.

"You recognized the woman?" he said softly. "Just so. I thought you would, and I was sorry to ask you to perform such an unpleasant task but it was absolutely necessary. Now," he continued, taking up his bundle of papers again, "I want you to describe the man who met you and your maid on your arrival at Hull the other night. Of course you saw him?"

"Certainly I saw him," replied Celia. "And I should know him again anywhere—the scoundrel!"

The high official smiled and glanced at Fullaway.

"You are thinking, Miss Lennard, that the man you then saw is the man who accompanied your maid to the hotel in which she was found dead," he said. "Well, that may be so—but it mayn't. That is why I want you to give us an accurate description of the man you saw. You described the maid very well indeed. Now describe the man."

"I can do that quite well," said Celia, with assurance. "And I can tell you the circumstances. The steamer—the Perisco—got into the river at Hull about a quarter to nine and anchored off the Victoria Pier. We understood that she couldn't get into dock just then because of the tide, and that we must go on shore by tender. A tender came off—some of the people on board it came on our deck. There was a good deal of bustle. I went down to my cabin to see after something or other. Lisette came to me there, evidently much agitated, saying that her brother had come off on the tender to fetch her at once to their mother who was ill in London—dying. She begged to be allowed to go with him. Of course I said she might. She immediately picked up her suit-case and travelling coat out of our pile of luggage, and I went up with her on deck. She and the man—her brother, as I understood—got into a small boat which was alongside and went straight off to the pier: the tender was not leaving for shore for some time. And—that was the last I saw of her. It was all done in a minute or two."

"Now—the man," suggested the chief softly.

"A young man—about Lisette's age, I should say—twenty-seven to thirty anyway. Tallish. Dark hair, moustache, eyes, and complexion. Good-looking—in a foreign way. I had no doubt he was her brother—he looked French, though he spoke English quite well and without accent. Very respectably dressed in dark clothes and overcoat. He would have passed for a well-to-do clerk—that type. I spoke to him—a few words. He spoke well—had very polite, almost polished manners. Of course he was hurried—wanting to get Lisette away—he said they could just catch the last train to London."

The chief shook his head.

"Not the man who accompanied her to the Paddington Hotel," he said. "Listen—this is the description of that man, as given to the police by the landlady and her servants: 'Age, presumably between forty and forty-five years, medium height. Brown hair. Clean-shaven. Dressed in grey tweed suit, over which he wore a fawn-coloured overcoat. Deerstalker hat—light brown. Brown brogue shoes.' That, you see," continued the chief, "describes a quite different person. You do not recognize the description as that of any man you have ever seen in company with your late maid, Miss Lennard?"

"I never saw my maid in any man's company," replied Celia. "Since I first engaged her we have not been much in London. I was in New York and Chicago for a time last year; then in Paris; then in Milan and Turin; lately in Moscow and St. Petersburg. When we were at home, here in London, she certainly had time of her own—her evenings out, you know—but of course I don't know with whom she spent them. No—I don't know any man answering that description."

The chief folded up his papers and restored them to his desk.

"Now that you are here," he said, "you may as well give me a few particulars about your doings on the Perisco, especially as they relate to Mr. James Allerdyke. When and where did you make his acquaintance?"

"On the steamer—a few hours after we left Christiania," replied Celia.

"Just as fellow-passengers, I suppose?"

"Quite so—just that. We sat next to each other at meals."

"Do you know where his cabin was on the steamer?"

"Yes, exactly opposite my own. He and I, I believe, were the only passengers who had cabins all to ourselves."

"Did he ever mention to you these valuables which Mr. Fullaway tells us he was carrying to England!"

"No—never at any time."

"Did you see him leave the Perisco for the shore?"

"Why, yes, certainly! As a matter of fact, he and I came ashore at Hull together, ahead of any other passengers. After Lisette had left the steamer with her brother, I happened to come across Mr. James Allerdyke. I told him what had just occurred, and asked him if he would help me about my things, as my maid had gone. He immediately suggested that we shouldn't wait for the tender, but should get a boat of our own—there were several lying around. He said he was in a great hurry to get ashore, because he'd a friend awaiting him at the Station Hotel. So he got a boat, and his things and mine were put into it, and we left the steamer, and were rowed to the landing-stage, just opposite."

"And you, of course, carried your jewel-case—or what you believed to be your jewel-case—the duplicate chest which you subsequently carried to Edinburgh?"

"Yes, of course—I had it in my hand when Lisette left, and, I never left hold of it until I got into the hotel."

"Do you remember if Mr. James Allerdyke carried anything in his hand?"

"Yes, he carried a hand-bag. He had that bag in his hand when I met him on deck; he kept it on his knee in the boat, and in the cab in which we drove to the hotel from the landing-stage; I saw him carrying it upstairs after we got to the hotel. What is more, I saw him bring it into the coffee-room later on, and place it on the table at which he had some supper. I saw it again in his room when I went in there to look at the plans of the Norwegian estate which he had told me about. He didn't take those plans out of that hand-bag; he took them out of a side flap-pocket in a suit-case."

"Did you have supper with him that night?"

"No—I was sitting at another table, talking to a lady who had been with us on the Perisco. A lot of Perisco passengers—twenty, at least—had come to the hotel by that time."

"Did any of them join Mr. James Allerdyke—at his table, I mean?"

"I don't remember—no, I think not. He sat at a table, one end of which adjoined the wall—he put the hand-bag at that end. I remember wondering why he carried his bag about with him. But then I, of course, was carrying what I believed to be my jewel-case."

"Did you see him talking to any of your fellow-passengers that night?"

"Oh, yes—to two or three of them—in the hall of the hotel. I didn't know who they were, particularly—except the doctor with the big beard. I saw him talking to Mr. Allerdyke at the door of the smoking-room."

"Had you taken any special notice of your fellow passengers on board the Perisco?"

"No—not at all. They were just the usual sort of passengers—I wasn't interested in them. Of course, I talked to some of them, in the ordinary way, as one does talk on board ship. But I don't remember anything particular about them, nor any of their names, even if I ever knew their names. Of course I remember Mr. James Allerdyke's name, because of the business talk."

The chief, who had been making shorthand notes of this conversation, paused for a moment, evidently considering matters, and then turned to Celia with a smile.

"Why did you leave the hotel at Hull so suddenly?" he asked. "I daresay you had good reasons, but I should just like to know what they were, if you don't mind."

"I'd no reason at all," replied Celia, with almost blunt directness. "At least, if I had, they were only a woman's reasons. I was a bit upset at being left alone. I didn't like the hotel. I knew I shouldn't sleep. It was a most beautiful moonlight night, and I suddenly thought I'd like to go motoring. I knew enough of the geography of those parts to know if I motored across country I should strike the Great Northern main line somewhere and catch a train to Edinburgh in the early morning. So—I just cleared out."

"Ah—you see you had quite a number of reasons!" said the chief, smiling again. "Very well. Now then, before you go, Miss Lennard, I want you to do just one thing more which may be useful to us in our work." He turned to the detective. "Get those things," he said quietly. "Bring the lot in here."

Celia made a little sound of distaste as the detective presently returned to the room carrying in one hand a brown leather suit-case, and in the other a cardboard dress-box, to which was strapped a travelling-coat, lined with fur. Her face, which had regained its colour, paled again.

"Lisette's things!" she muttered. "Oh—I don't—don't like to see them!

What is it you want?"

"We want you to identify them—and, if you will, to look them over," replied the chief. "The cardboard box contains everything she was wearing when she went to the hotel in Eastbourne Terrace; the suit-case and coat are what she took in with her. Spread the things out on that side table," he continued, turning to the detective.

"Let Miss Lennard look them over."

Celia performed the task required of her with dislike—it seemed somehow as if she were inspecting the dead woman afresh. She hurried over the task.

"All these things are hers, of course," she said. "That's the suit-case she had with her when she left me at Hull, and that's the coat I gave her—and the other things are hers, too. Oh—I don't like looking at them. Can't we go, please?"

"One moment," said the chief. "I wanted to tell you that amongst all these things there is nothing that establishes the woman's identity—I mean in the way of papers or anything of that sort. There were no letters in this case—not a scrap of paper. There is money in that purse—two or three pounds in gold, some silver. There is her watch—a good gold watch—and there are two or three rings she was wearing. Now we have only made a superficial examination of all these personal belongings—can you, as her mistress, suggest if she was likely to hide anything in her clothing, and if so, in what article? You might save us some trouble, Miss Lennard."

Allerdyke, who was more interested in Celia than in what was going on, saw a sudden gleam come into her eyes—her feminine spirit of curiosity was aroused. She hesitated, turned back to the side-table, paused before the various articles laid out there, took up and fingered two or three, and suddenly wheeled round on the men, exhibiting a quilted handkerchief case.

"There's something been sewn into the padding of this!" she said. "I can feel it. Can any one lend me pocket-scissors or a penknife?"

The men gathered round as Celia's deft fingers ripped open the satin covering: a moment later she drew out a wad of folded paper and handed it to the chief. Fullaway and Allerdyke craned their necks over his shoulders as he unwrapped and spread the bits of paper out before them. And it was Fullaway who broke the silence with a sharp exclamation.

"Bank-notes!" he said. "Russian bank-notes! And new ones!"

CHAPTER XII
THE THIRD MURDER

Fullaway's exclamation was followed by a murmur of astonishment from Celia, and by a low growl which meant many things from Allerdyke. The chief turned the banknotes over silently, moved to his desk, and picked up a reference book.

"I'm not very familiar with Russian money—paper or otherwise," he remarked. "How much does this represent in ours, now?"

"I can tell you that," said Fullaway, taking the wad of notes and rapidly counting them. "Five hundred pounds English," he announced. "And you see that all the notes are new—don't forget to note that."

"Yes?—what do you argue from it?" asked the chief, with obvious interest. "It proves—what?"

"That these notes were given to this woman in Russia, recently—most likely in St. Petersburg," replied the American. "And, in my opinion, their presence—their discovery—proves more. It suggests at any rate that this woman, the dead maid, was a tool in the conspiracy to rob Miss Lennard and Mr. James Allerdyke, that this money is her reward, or part of it, and that the whole scheme was hatched and engineered in Russia."

"Good!" muttered Allerdyke. "Now we're getting to business."

"We shall have to get some evidence from Russia," observed the chief meditatively. "That's very evident. If the thing began there, or was put into active shape there—"

"The Princess Nastirsevitch is on her way now," said Fullaway. He pulled out his pocket-book, and began searching amongst its papers. "Here you are," he continued producing a cablegram. "That's from the Princess—you see she says she's leaving for London at once, via Berlin and Calais, and will call upon me at my hotel as soon as she arrives. Now, that was sent off two days ago—she'd leave St. Petersburg that night. It's seventy-two hours' journey—three days. She'll be in London tomorrow evening."

The chief sat down at his desk and picked up a pen.

"Give me your addresses please, all of you," he said. "Then I can communicate with you at any moment. Miss Lennard, you mentioned Bedford Court Mansions. What number? Right.—yours, Mr. Fullaway, is the Waldorf Hotel—permanently there? Very good. You, Mr. Allerdyke, live in Bradford? It will be advisable, if you really want to clear up the mystery of your cousin's death, to remain in town for a few days, at any rate—now that we've got all this in hand, you'd better be close to the centre of things. Can you give me an address here?"

"I've a London office," answered Allerdyke. "I can always be heard of there when I'm in town. Allerdyke and Partners, Limited, Gresham Street—ask for Mr. Marshall Allerdyke. But as I'll have to put up here, I'll go to the Waldorf, with Mr. Fullaway, so if you want me you'll find me there. And look here," he went on, as the chief noted these particulars, "I want to know, to have some idea, you know, of what's going to be done. I tell you, I'll spare no time, labour, or expense in getting at the bottom of this! If it's a question of money, say the word, and—"

"All right, Mr. Allerdyke, leave it to us—for the present," said the chief, with an understanding smile. "I know what you mean. We're only beginning. This affair is doubtless a big thing, as Mr. Fullaway has suggested, and it will need some clever work. Now, at present, this case—the joint case of the Hull affair and the Eastbourne Terrace affair, for they're without doubt both parts of one serious whole—is in the hands of two of my best men. This is one of them: Detective-Sergeant Blindway. If and when Blindway wants any of you, he'll come to you. Miss Lennard, you'll be wanted at the inquest on your late maid—the Coroner's officer will let you know when. You two gentlemen will doubtless go with Miss Lennard. You'll all three certainly be wanted at that adjourned inquest at Hull. Now, that's all—except that when you, Miss Lennard, return home, you must at once begin searching for the references you had with your maid—let me have them as soon as they're found—and that you, Mr. Fullaway, must bring the Princess Nastirsevitch here as soon as you can after her arrival."

Outside New Scotland Yard Celia Lennard relieved her feelings with a fervent exclamation.

"I wish I'd never spent a penny on pearls or diamonds in my life!" she said vehemently. "Insane folly! What good have they done? Leading to all this bother, and to murder. What fools women are! All that money thrown away!—for of course I shall never see a sign of them again!"

"That's a rather hopeless way of looking at it," observed Fullaway. "You've got the cleverest police in Europe on the search for them; also you've got our friend Allerdyke and myself on the run, and we're neither of us exactly brainless. So hasten home in this taxi-cab, get some lunch, have an hour's nap, and then begin putting your papers straight and looking for those references. Search well!—you don't know what depends on it."

He and Allerdyke strolled up Whitehall when Celia had gone—in silence at first, both wrapped in meditation.

"There's only one thing one can say with any certainty about this affair, Allerdyke," remarked the American at last, "and that is precisely what the man we've been talking to said—it's a big do. The folk at the back of it are smart and clever and daring. We'll need all our wits. Well, come along to the Waldorf and let's lunch—then we'll talk some more. There's little to be done till the Princess turns up tomorrow."

"There's one thing I want to do at once," said Allerdyke. "If I'm going to stop in town I must wire to my housekeeper to send me clothes and linen, and to the manager at my mill. Then I'm with you—and I wish to Heaven we'd something to do! What I can't stand is this forced inaction, this hanging about, waiting, wondering, speculating—and doing naught!"

"We may be in action before you know it's at hand," said Fullaway. "In these cases you never know what a minute may bring forth. All we can do is to be ready."

He led the way to the nearest telegraph office and waited while Allerdyke sent off his messages. The performance of even this small task seemed to restore the Yorkshireman's spirits—he came away smiling.

"I've told my housekeeper to pack a couple of trunks with what I want, and to send my chauffeur, Gaffney, up with them, by the next express," he said. "I feel better after doing that. He's a smart chap, Gaffney—the sort that might be useful at a pinch. If any one wanted anything ferreted out, now!—he's the sense of an Airedale terrier, that chap!"

"High praise," laughed Fullaway. "And original too. Well, let's fix up and get some food, and then we'll go into my private rooms and have a talk over the situation."

Mr. Franklin Fullaway, following a certain modern fashion, introduced into life by twentieth-century company promoters and magnates of the high finance, had established his business quarters at his hotel. It was a wise and pleasant thing to do, he explained to Allerdyke; you had the advantage of living over the shop, as it were; of being able to go out of your private sitting-room into your business office; you had the bright and pleasant surroundings; you had, moreover, all the various rooms and saloons of a first-rate hotel wherein to entertain your clients if need be. Certainly you had to pay for these advantages and luxuries, but no more than you would have to lay out in the rents, rates, and taxes of palatial offices in a first-class business quarter.

"And my line of business demands luxurious fittings," remarked the American, as he installed Allerdyke in a sybaritic armchair and handed him a box of big cigars of a famous brand. "You're not the first millionaire that's come to anchor in that chair, you know!"

"If they're millionaires in penny-pieces, maybe not," answered Allerdyke. He lighted a cigar and glanced appraisingly at his surroundings—at the thick velvet pile of the carpets, the fine furniture, the bookcases filled with beautiful bindings, the choice bits of statuary, the two or three unmistakably good pictures. "Doing good business, I reckon?" he said, with true Yorkshire curiosity. "What's it run to, now?"

Fullaway showed his fine white teeth in a genial laugh.

"Oh, I've turned over two and three millions in a year in this little den!" he answered cheerily. "Varies, you know, according to what people have got to sell, and what good buyers there are knocking around."

"You keep a bit of sealing wax, of course?" suggested Allerdyke. "Take care that some of the brass sticks when you handle it, no doubt?"

"Commission and percentage, of course," responded Fullaway.

"Ah, well, you've an advantage over chaps like me," said Allerdyke. "Now, you shall take my case. We've made a pile of money in our firm, grandfather, father, and myself; but, Lord, man, you wouldn't believe what our expenses have been! Building mills, fitting machinery—and then, wages! Why, I pay wages to six hundred workpeople every Friday afternoon! Our wages bill runs to well over fourteen hundred pound a week. You've naught of that sort, of course—no great staff to keep up?"

"No," answered Fullaway. He nodded his head towards the door of a room through which they had just passed on their way into the agent's private apartments. "All the staff I have is the young lady you just saw—Mrs. Marlow. Invaluable!"

"Married woman?" inquired Allerdyke laconically.

"Young widow," answered Fullaway just as tersely. "Excellent business woman—been with me ever since I came here—three years. Speaks and writes several languages—well educated, good knowledge of my particular line of business. American—I knew her people very well. Of course, I don't require much assistance—merely clerical help, but it's got to be of a highly intelligent and specialized sort."

"Leave your business in her hands if need be, I reckon?" suggested Allerdyke, with a sidelong nod at the closed door.

"In ordinary matters, yes—comfortably," answered Fullaway. "She's a bit a specialist in two things that I'm mainly concerned in—pictures and diamonds. She can tell a genuine Old Master at a glance, and she knows a lot about diamonds—her father was in that trade at one time, out in South Africa."

"Clever woman to have," observed Allerdyke; "knows all your business, of course?"

"All the surface business," said Fullaway, "naturally! Anything but a confidential secretary would be useless to me, you know."

"Just so," agreed Allerdyke. "Told her about this affair yet?"

"I've had no chance so far," replied Fullaway. "I shall take her advice about it—she's a cute woman."

"Smart-looking, sure enough," said Allerdyke. He let his mind dwell for a moment on the picture which Mrs. Marlow had made as Fullaway led him through the office—a very well-gowned, pretty, alert, piquant little woman, still on the sunny side of thirty, who had given him a sharp glance out of unusually wide-awake eyes. "Aye, women are clever nowadays, no doubt—they'd show their grandmothers how to suck eggs in a good many new fashions. Well, now," he went on, stretching his long legs over Fullaway's beautiful Persian rug, "what do you make of this affair, Fullaway, in its present situation? There's no doubt that everything's considerably altered by what we've heard of this morning. Do you really think that this French maid affair is all of a piece, as one may term it, with the affair of my cousin James?"

"Yes—without doubt," replied Fullaway. "I believe the two affairs all spring from the same plot. That plot, in my opinion, has originated from a clever gang who, somehow or other, got to know that Mr. James Allerdyke was bringing over the Princess Nastirsevitch's jewels, and who also turned their eyes on Zélie de Longarde's valuables. The French maid, Lisette, was probably nothing but a tool, a cat's paw, and she, having done her work, has been cleverly removed so that she could never split. Further—"

A quiet knock at the door just then prefaced the entrance of Mrs. Marlow, who gave her employer an inquiring glance.

"Mr. Blindway to see you," she announced. "Shall I show him in?"

"At once!" replied Fullaway. He leapt from his chair, and going to the door called to the detective to enter. "News?" he asked excitedly, when Mrs. Marlow had retired, closing the door again. "What is it—important?"

The detective, who looked very solemn, drew a letter-case from his pocket, and slowly produced a telegram.

"Important enough," he answered. "This case is assuming a very strange complexion, gentlemen. This arrived from Hull half an hour ago, and the chief thought I'd better bring it on to you at once. You see what it is—"

He held the telegram out to both men, and they read it together, Fullaway muttering the words as he read—

From Chief Constable, Hull, to Superintendent C.I.D., New Scotland Yard.

Dr. Lydenberg, concerned in Allerdyke case, was shot dead in High Street here this morning by unseen person, who is up to now unarrested and to whose identity we have no clue.