“As sure as I am that I’m speaking to you at this minute. I had my doubts in the beginning—there seemed so little to connect the separate tragedies—but when case after case followed with exactly, or nearly exactly, the same details in every instance, one simply had to suspect foul play.”

“Naturally. Even a donkey must know that there’s food about if he smells thistles. Begin at the beginning, please. How did the affair start? When and where?”

“In the neighbourhood of Hampstead Heath at two o’clock in the morning. The constable on duty in the district came upon a man clad only in pajamas lying face downward under the wall surrounding a corner house—still warm but as dead as Queen Anne.”

“In his pajamas, eh?” said Cleek, reaching for a fresh slice of toast. “Pretty clear evidence that that poor beggar’s trouble, whatever it was, must have overtaken him in bed and that that bed was either in the vicinity of the spot where he was found, or else the man had been carried in a closed vehicle to the place where the constable discovered him. A chap can’t walk far in that kind of a get-up without attracting attention. And the body was warm, you say, when found. Hum-m! Any vehicle seen or heard in the vicinity of the spot just previously?”

“Not the ghost of one. The night was very still, and the constable must have heard if either cab, auto, carriage, or dray had passed in any direction whatsoever. He is positive that none did. Naturally, he thought, as you suggested just now, that the man must have come from some house in the neighbourhood. Investigation, however, proved that he did not—in short, that nobody could be found who had ever seen him before. Indeed, it is hardly likely that he could have been sleeping in any of the surrounding houses, for the neighbourhood is a very good one, and the man had the appearance of being a person of the labouring class.”

“Any marks on the clothing or body?”

“Not one—beyond a tattooed heart on the left forearm, which caused the coroner to come to the conclusion later that the man had at some time been either a soldier or a sailor.”

“Why?”

“The tattooing was evidently of foreign origin, he said, from the skilful manner in which it had been performed and the brilliant colour of the pigments used. Beyond that, the body bore no blemish. The man had not been stabbed, he had not been shot, and a post-mortem examination of the viscera proved conclusively that he had not been poisoned. Neither had he been strangled, etherized, drowned, or bludgeoned, for the brain was in no way injured and the lungs were in a healthy condition. It was noticed, however, that the passages of the throat and nose were unduly red, and that there was a slightly distended condition of the bowels. This latter, however, was set down by the physicians as the natural condition following enteric, from which it was positive that the man had recently suffered. They attributed the slightly inflamed condition of the nasal passage and throat to his having either swallowed or snuffed up something—camphor or something of that sort—to allay the progress of the enteric, although even by analysis they were unable to discover a trace of camphor or indeed of any foreign substance whatsoever. The body was held in the public mortuary for several days awaiting identification, but nobody came forward to claim it; so it was eventually buried in the usual way and a verdict of ‘Found Dead’ entered in the archives against the number given to it. The matter had excited but little comment on the part of the public or the newspapers, and would never have been recalled but for the astonishing fact that just two nights after the burial a second man was found under precisely similar circumstances—only that this second man was clad in boots, undervest, and trousers. He was found in a sort of gulley (down which, from the marks on the side, he had evidently fallen), behind some furze bushes at a far and little frequented part of the heath. An autopsy established the fact that this man had died in a precisely similar manner to the first, but, what was more startling, that he had evidently pre-deceased that first victim by several days; for, when found, decomposition had already set in.”

“Hum-m-m! I see!” said Cleek, arching his brows and stirring his tea rather slowly. “A clear case of what Paddy would term ‘the second fellow being the first one.’ Go on, please. What next?”