In less than a day or two the ident.i.ty of the victim of the burnt barn was established. For Hewitt had his idea, and he communicated with Plummer, of Scotland Yard. The man with the b.u.t.toned boots and the sketch-book was the artist who had been staying at the cottage in the village, but who, singularly enough, had never been seen to draw, and had left no drawings behind him. He had warned the people of the cottage that he might be away for a night or two, and he had stayed away for two nights before; so that his disappearance did not disturb them, and when they heard that Mr. Peytral's body had been found in the barn they accepted the news as fact. They recognised at once a photograph produced by Plummer as that of their late lodger. And the photograph had been procured from Messrs. Kingsley, Bell and Dalton, the intended victims in the bond case, and it was one of Henning, their vanished correspondence clerk!

That his death would be convenient to Mayes, the greater scoundrel, was plain enough. The bond robbery had been brought to naught, thanks to Martin Hewitt, and Henning was now useless. Worse, he might be caught, or give himself up, and was thus a perpetual danger. And probably he wanted money. This being so, it was a singular fact that at the inquest the surgeon who had examined the wound gave it as his most positive opinion that it had been self-inflicted. And it was inflicted with a razor, Henning's own, as was very clearly proved after inquiry. For the razor was found in the barn by the police, entangled with the blackened frame of an old lantern. Here was still another puzzle; one to which the final revelation of the mystery of the Red Triangle gave an answer, as will be seen in due place.

THE CASE OF THE ADMIRALTY CODE

I

Quick on the heels of the case of the Burnt Barn followed the next of the Red Triangle affairs. Indeed, the interval was barely two days. Mr. Victor Peytral, it will be remembered, had declined to reveal to Hewitt the addresses of the two houses in London which he had seen Mayes visit, desiring to think the matter over for a few days first; but before any more could be heard from him, news of another sort was brought by Inspector Plummer.

It may give some clue to the period whereabout the whole mystery of the Red Triangle began to be cleared up if I say that at the time of Plummer's visit this country was on the very verge of war with a great European State. It is a State with which the present relations of England are of the friendliest description, and, since the dreaded collision was happily averted, there is no need to particularise in the matter now, especially as the name of the country with which we were at variance matters nothing as regards the course of events I am to relate. Though most readers will recognise it at once when I say that the war, had it come to that, would have been a naval war of great magnitude; and that during the time of tension swift but quiet preparations were going forward at all naval depots, and movements and dispositions of our fleet were arranged that extended to the remotest parts of the ocean.

It was at the height of the excitement, and, as I have said, two days after the return of Hewitt and myself from Throckham, when the case of the Burnt Barn had been disposed of, that Detective-Inspector Plummer called. I was in Hewitt's office at the time, having, in fact, called in on my way to learn if he had heard more from Mr. Victor Peytral, for, as may be imagined, I was as eager to penetrate the mystery of the Triangle as Hewitt himself-perhaps more so, since Hewitt was a man inured to mysteries. I had hardly had time to learn that Peytral had not yet made up his mind so far as to write, when Plummer pushed hurriedly into the room.

"Excuse my rushing in like this," he said, "but your lad told me that it was Mr. Brett who was with you, and the matter needs hurry. You've heard no more of that fellow-Myatt, Hunt, Mayes, whatever his name is last-since the barn murder, of course? Has Peytral given you the tip he half promised?"

Hewitt shook his head again. "Brett has this moment come to ask the same question," he said. "I have heard nothing."

"I must have it," said Plummer, emphatically. "Do you think he will tell me?"

Hewitt shook his head again. "Scarcely likely," he said. "He's an odd fellow, this Mr. Peytral-a foreigner, with revenge in his blood. I have done him and his daughter some little service, and he told me all his private history; but he seemed even then disposed to keep Mayes to himself and let n.o.body interfere with his own vengeance. But I will wire if you like. What is it?"

"I'll tell you," said Plummer, pushing the door close behind him. "I'll tell you-in confidence, of course-because you've seen more of this mysterious rascal than I have, and-equally in confidence, of course-Mr. Brett may hear, too, since he's been in several of the cases already. Well, of course, we all know well enough that we want this creature-Mayes, we may as well call him, I suppose, now-for three murders, at least, to say nothing of other things. That's all very well, and we might have got him with time. But now we want him for something else; and it's such a thing that we must have him at once, or else"-and Plummer pursed his lips and snapped his fingers significantly. "We can't wait over this, Mr. Hewitt; we've got to have that man to-day, if it can be done. And there's more than ordinary depending on it. It's the country this time. The Admiralty telegraphic code has been stolen!"

"By Mayes?"

Plummer shrugged his shoulders. "That's to be proved," he said; "but he was seen leaving the office at about the time the loss occurred, and that's enough to set me after him; and there's not another clue of any sort. Mr. Hewitt, I wish you were in the official service!"

Hewitt smiled. "You flatter me," he said, "as you have done before. But why in this case particularly?"

"It's a case altogether out of the ordinary, and one of a string of such, all of which you have at your fingers' ends. And I don't mind confessing that this man Mayes is a little too big a handful for one-for me, at any rate. I wish you could work with me over this; in fact, in the special circ.u.mstances I've a good mind to ask to have you retained, as an exceptional measure. But the thing's urgent, and there's red-tape!"

Hewitt had taken a glance at his desk tablet, which he now flung down.

"I'll do it for love," he said, "if necessary. My appointment list is uncommonly slack just now, and even if it weren't, I'd make a considerable sacrifice rather than be out of this. This fellow Mayes is a dangerous man; and I feel it a point of honour that he shall not continue to escape. Moreover, I have begun to form a certain theory as to the Red Triangle, and all there is at the back of it-a theory I would rather keep to myself till I see a little more, since as it stands it may only strike you as fantastic, and if it is wrong it may lead some of us off the track; but it is a theory I wish to test to the end. So I'm with you, Plummer, if you'll allow it; and you can make your official application for a special retainer or not, just as you please."

Plummer was plainly delighted.

"Most certainly I will," he said. "Shall I give you the heads of the case, or will you come to the Admiralty and see for yourself?"

"Both, I think," said Hewitt. "But first I will send a telegram to Peytral. Then you can give me the heads of the case as we go along, and I will look at the place for myself. I am in this case heart and soul, pay or no pay-and I expect my friend Brett would like to be in it, too. Is there any objection?"

"Well," Plummer answered, a little doubtfully, "we're glad of outside help, of course, but I'm not sure, officially--"

"Of course you are always glad of outside help," Hewitt interrupted, "and in this case we may possibly find Brett more useful than you think. Consider now. He has seen a good deal of these cases-quite as much as you, in fact-but he is the only one of the three of us whom Mayes does not know by sight. Remember, Mayes saw us both in the affair of Mr. Jacob Mason, and he saw you again in the case of the Lever Key-escaped, in fact, because he instantly recognised you. I'll answer for Brett's discretion, and I'm sure he'll be glad to help, even if, for official reasons, you may not find it possible to admit him wholly into your counsels."

Of course I willingly a.s.sented, and the conditions understood, Plummer offered no further objection. Hewitt despatched his telegram, and in a very few minutes we were in a cab on the way to the Admiralty.

"This is the way of it," Plummer said. "You will remember that when we lost Mayes at the end of the Lever Key case, I was waiting for him in that city office, with an a.s.sistant, and that we only saw him for an instant in the lift. Well, that a.s.sistant was a very intelligent man of mine, named Corder-a fellow with a wonderful memory for a face. Now Corder is on another case just now, and we'd put him on, dressed like a loafer, to hang about Whitehall and the neighbourhood, watching for some one we want. Well, this morning there came an urgent message to the Yard from the Admiralty, to ask for a responsible official at once, and I was sent. As I came along I saw Corder lounging about, and of course I took no notice-it would not do for us people from the Yard to recognise each other too readily in the street. But Corder came up, and made pretence to ask me for a match to light his pipe; and under cover of that he told me that he had seen Mayes not an hour before, coming out of the Admiralty. At this, of course, I p.r.i.c.ked up my ears. I didn't know what they wanted me for, but if there was mischief, and that fellow had been there, it was likely at least that he might have been in it. Corder was quite positive that it was the man, although he had only seen him for a moment in the lift. He hadn't seen him go into the Admiralty office, but he was pa.s.sing as he came out, and noted the time exactly, so that he might report to me at the first opportunity. The time was 11.32, and Mayes jumped into a hansom and drove off. He walked right out into the middle of the road to stop the hansom-you know how wide the road is there-so that Corder couldn't hear his direction to the cabman, but he took the number as the cab went off. Corder ought to have collared him then and there, I think, but he was in a difficult position. It would have endangered the case he was on, which is very important; and besides, he didn't realise how much we wanted him for, having only been brought in as an a.s.sistant at the tail of our bond case. Still less did he guess-any more than myself-what I was going to hear at the Admiralty office."

"At any rate," interrupted Hewitt, "you've got the number of the cab?"

"Here it is," Plummer answered, "and I've already set a man to get hold of the cabman. You'd better note the number-92,873."

Hewitt duly noted the number, and advised me to do the same, in case I should chance to meet the cab during the afternoon; and as we neared our destination Plummer gave us the rest of the case in outline.

"In the office," he said, "I found them in a great state. A copy of the code, or cypher, in which confidential orders and other messages are sent to the fleet all over the world, and in which reports and messages are sent back, had disappeared during the morning. It was in charge of a Mr. Robert Telfer, a clerk of responsibility and undoubted integrity. He kept it in a small iron safe, which is let into the wall of his private room. It was safe when he arrived in the morning, and he immediately used it in order to code a telegram, and locked it in the safe again at 10.20. Two hours later, at 12.20, he went to the safe for it again, in order to de-code a message just received, and it was gone! And the lock of the safe is one that would take hours to pick, I should judge. There isn't a shade of a clue, so far as I can see, except this circ.u.mstance of Mayes being seen leaving by Corder-just between Telfer's two visits to the safe, you perceive. And of course there may be nothing in that, except for the character of the man. And that's all there is to go on, as far as I can see. I needn't tell you how important the thing is at a time like this, and how much would be paid for that secret code by a certain foreign Government. We have made hurried arrangements to have certain places watched, and as soon as I have taken you to the office I must rush off and make a few more arrangements still. But here we are."

Mr. Robert Telfer's room was at the side of a long and gloomy corridor on the upper floor, and the door was distinguished merely by a number and the word "Private" painted thereon. We found Mr. Telfer sitting alone, and plainly in a state of great nervous tension. He was a man of forty or thereabout, thin, alert, and using a single eye-gla.s.s. Plummer introduced us by name, and rapidly explained our business.

"I told you the name of the party I am after, Mr. Telfer," Plummer said, "and I went straight to Mr. Martin Hewitt, as being most likely to have information of him. Mr. Hewitt, whose name you know already, of course, is kind enough, seeing we're in a bad pinch, and pushed for time, to come in and give us all the help he can. Both he and his friend, Mr. Brett, know a good deal of the doings of the person we're after, and their a.s.sistance is likely to be of the very greatest value. Do you mind giving Mr. Hewitt any information he may ask? I must rush over to the Yard to put some other inquiries on foot, and to set an observation or two, but I'll be back presently."

"Certainly," Mr. Telfer answered, "I'm only too anxious to give any information whatever-so long as it is nothing departmentally forbidden-which will help to put this horrible matter right. Please ask me anything, and be patient if my answers are not very clear. I have been much overworked lately, as you may imagine, and have had very little sleep; and now this terrible misfortune has upset me completely; for, of course, I am held responsible for that copy of the code, and if it isn't recovered, and quickly, I am ruined-to say nothing, of course, of the far more serious consequences in other directions."

"That is the safe in which it was kept, I presume?" Hewitt said, indicating a small one let into the wall. "May I examine it?"

"Certainly." Mr. Telfer turned and produced the keys from his pocket. "The code was here, lying on this shelf when I needed it this morning at ten. I took it out, used it, returned it to the same place exactly, and locked the safe door. Then I took the draft of the telegram, together with the copy in cypher, into the Controller's room, gave it into safe hands, and returned here."

Hewitt narrowly examined the lock of the safe with his pocket lens. "There are no signs of the lock having been picked," he said, "even if that were possible. As a matter of fact, this is a lock that would take half a day to pick, even with a heavy bag of tools. No, I don't think that was the way of it. You have no doubt about locking the safe door at 10.20, I suppose, before you went to the Controller's room?"

"No possible doubt whatever. You see, I left the whole bunch of keys hanging in the lock while I coded the telegram. It was a short one, and was soon done. Then I returned the code to its place, locked the safe, and then used another key on the bunch to lock a drawer in this desk. I had no occasion to go to the safe again till about 12.20, when the Controller's secretary came here with a telegram to be de-coded. The safe was still locked then, but when it was opened the code was gone."

"You had had no occasion to go to the safe in the meantime?"

"None at all. I locked it at 10.20, and I unlocked it two hours later, and that was all."

"You were not in the room the whole of the time, of course?"

"Oh, no. I have told you that at 10.20 I went to the Controller's room, and after that I went out two or three times on one occasion or another. But each time I locked the door of the room."

"Oh, you did? That is important. And you took all your keys with you, I presume?"

"Yes, all. The keys on the bunch I took in my pocket, of course, and the room door key I also took. There are one or two rather important papers on my desk, you see, and anybody from the corridor might come in if the door were left unlocked."

"The lock of the door would be a good deal easier to pick than that of the safe," Hewitt observed, after examining it. "But that would be of no great use with the safe locked. Shortly, then, the facts are these. You locked the code safely away at 10.20, you left the room two or three times, but each time the door, as well as the safe, was locked, and the keys in your pocket; and then, at 12.20, or two hours exactly after the code had been put safely away, you opened the safe again in presence of the Controller's secretary, and the code had vanished. That is the whole matter in brief, I take it?"

"Precisely." Mr. Telfer was pallid and bewildered. "It seems a total impossibility," he said; "a total, absolute, physical impossibility; but there it is."

"But as no such thing as a physical impossibility ever happens," Hewitt replied calmly, "we must look further. Now, are there any other ways into this room than by that door into the corridor? I see another door here. What is that?"

"That door has been locked for ages. The room on the other side is one like this, with a door in the corridor; it is used chiefly to store old doc.u.ments of no great importance, and I believe that whole stacks of them, in bundles, are piled against the other side of that same door. We will send for the key and see, if you like."

The key was sent for, and the door from the corridor opened. As Telfer had led us to expect, the place was full of old papers in bundles and parcels, thick with ancient dust, and these things were piled high against the door next his room, and plainly had not been disturbed for months, or even years.

"There remains the skylight," said Hewitt, "for I perceive, Mr. Telfer, that your room is lighted from above, and has no window; while the grate is a register. There seems to be no opening in that skylight but the revolving ventilator. Am I right?"

"Quite so. There is no getting in by the skylight without breaking it, and, as you see, it has not been broken. Certainly there are men on the roof repairing the leads, but it is plain enough that n.o.body has come that way. The thing is wholly inexplicable."

"At present, yes," Hewitt said, musingly. He stood for a few moments in deep thought.