nothing else except a white silk handkerchief unmarked. In the right-hand top pocket of the waistcoat was a neat silver cigarette case, perfectly plain, containing half a dozen cigarettes. I took one out and looked at it. It was a Melania, a cigarette I happen to know for they stock them at one of my clubs, the Dionysus, and it chances to be the only place in London where you can get the brand.

It looked as if my unknown friend had come from London.

There was also a plain silver watch of Swiss make.

In the trousers pocket was some change, a little English silver and coppers, some Dutch silver and paper money. In the right-hand trouser pocket was a bunch of keys.

That was all.

I put the different articles on the floor beside me. Then I got up, put the candle on the table, drew the chair up to it and opened the portfolio.

In a little pocket of the inner flap were visiting cards. Some were simply engraved with the name in small letters:

Dr. Semlin

Others were more detailed:

Dr. Semlin, Brooklyn, N.Y.
The Halewright Mfg. Co., Ltd.

There were also half a dozen private cards:

Dr. Semlin, 333 E. 73rd St., New York.
Rivington Park House.

In the packet of cards was a solitary one, larger than the rest, an expensive affair on thick, highly glazed millboard, bearing in gothic characters the name:

Otto von Steinhardt.

On this card was written in pencil, above the name:

"Hotel Sixt, Vos in't Tuintje," and in brackets, thus: "(Mme. Anna Schratt.)"

In another pocket of the portfolio was an American passport surmounted by a flaming eagle and sealed with a vast red seal, sending greetings to all and sundry on behalf of Henry Semlin, a United States citizen, travelling to Europe. Details in the body of the document set forth that Henry Semlin was born at Brooklyn on 31st March, 1886, that his hair was Black, nose Aquiline, chin Firm, and that of special marks he had None. The description was good enough to show me that it was undoubtedly the body of Henry Semlin that lay at my feet.

The passport had been issued at Washington three months earlier. The only visa it bore was that of the American Embassy in London, dated two days previously. With it was a British permit, issued to Henry Semlin, Manufacturer, granting him authority to leave the United Kingdom for the purpose of travelling to Rotterdam, further a bill for luncheon served on board the Dutch Royal mail steamer Koningin Regentes on yesterday's date.

In the long and anguishing weeks that followed on that anxious night in the Hotel of the Vos in't Tuintje, I have often wondered to what malicious promptings, to what insane impulse, I owed the idea that suddenly germinated in my brain as I sat fingering the dead man's letter-case in that squalid room. The impulse sprang into my brain like a flash and like a flash I acted on it, though I can hardly believe I meant to pursue it to its logical conclusion until I stood once more outside the door of my room.

The examination of the dead man's papers had shown me that he was an American business man, who had just come from London, having but recently proceeded to England from the United States.

What puzzled me was why an American manufacturer, seemingly of some substance and decently dressed, should go to a German hotel on the recommendation of a German, from his name, and the style of his visiting card, a man of good family.

Semlin might, of course, have been, like myself, a traveller benighted in Rotterdam, owing his recommendation to the hotel to a German acquaintance in the city. Still, Americans are cautious folk and I found it rather improbable that this American business man should adventure himself into this evil-looking house with a large sum of money on his person—he had several hundred pounds of money in Dutch currency notes in a thick wad in his portfolio.

I knew that the British authorities discouraged, as far as they could, neutrals travelling to and fro between England and Germany in war-time. Possibly Semlin wanted to do business in Germany on his European trip as well as in England. Knowing the attitude of the British authorities, he may well have made his arrangements in Holland for getting into Germany lest the British police should get wind of his purpose and stop him crossing to Rotterdam.

But his German was so flawless, with no trace of Americanism in voice or accent. And I knew what good use the German Intelligence had made of neutral passports in the past. Therefore I determined to go next door and have a look at Dr. Semlin's luggage. In the back of my mind was ever that harebrain resolve, half-formed as yet but none the less firmly rooted in my head.

Taking up my candle again, I stole out of the room. As I stood in the corridor and turned to lock the bedroom door behind me, the mirror at the end of the passage caught the reflection of my candle.

I looked and saw myself in the glass, a white, staring face.

I looked again. Then I fathomed the riddle that had puzzled me in the dead face of the stranger in my room.

It was not the face of Francis that his features suggested.

It was mine!

The next moment I found myself in No. 33. I could see no sign of the key of the room; Semlin must have dropped it in his fall, so it behoved me to make haste for fear of any untoward interruption. I had not yet heard eleven strike on the clock.

The stranger's hat and overcoat lay on a chair. The hat was from Scott's: there was nothing except a pair of leather gloves in the overcoat pockets.

A bag, in size something between a small kit-bag and a large handbag, stood open on the table. It contained a few toilet necessaries, a pair of pyjamas, a clean shirt, a pair of slippers, ... nothing of importance and not a scrap of paper of any kind.

I went through everything again, looked in the sponge bag, opened the safety razor case, shook out the shirt, and finally took everything out of the bag and stacked the things on the table.

At the bottom of the bag I made a strange discovery. The interior of the bag was fitted with that thin yellow canvas-like material with which nearly all cheap bags, like this one was, are lined. At the bottom of the bag an oblong piece of the lining had apparently been torn clean out. The leather of the bag showed through the slit. Yet the lining round the edges of the gap showed no fraying, no trace of rough usage. On the contrary, the edges were pasted neatly down on the leather.

I lifted the bag and examined it. As I did so I saw lying on the table beside it an oblong of yellow canvas. I picked it up and found the under side stained with paste and the brown of the leather.

It was the missing piece of lining and it was stiff with something that crackled inside it.

I slit the piece of canvas up one side with my penknife. It contained three long fragments of paper, a thick, expensive, highly glazed paper. Top, bottom and left-hand side of each was trim and glossy: the fourth side showed a broken edge as though it had been roughly cut with a knife. The three slips of paper were the halves of three quarto sheets of writing, torn in two, lengthways, from top to bottom.

At the top of each slip was part of some kind of crest in gold, what, it was not possible to determine, for the crest had been in the centre of the sheet and the cut had gone right through it.

The letter was written in English but the name of the recipient as also the date was on the missing half.

Somewhere in the silence of the night I heard a door bang. I thrust the slips of paper in their canvas covering into my trousers pocket. I must not be found in that room. With trembling hands I started to put the things back in the bag. Those slips of paper, I reflected as I worked, at least rent the veil of mystery enveloping the corpse that lay stiffening in the next room. This, at any rate, was certain: German or American or hyphenate, Henry Semlin, manufacturer and