"I presume, as I see blood-stains upon it, that it is the one which was found in the dead man's grasp. Watson, this knife is surely in your line?"
"It is what we call a cataract knife," said I.
"I thought so. A very delicate blade devised for very delicate work. A strange thing for a man to carry with him upon a rough expedition, especially as it would not shut in his pocket."
"The tip was guarded by a disk of cork which we found beside his body," said the Inspector. "His wife tells us that the knife had lain upon the dressing-table, and that he had picked it up as he left the room. It was a poor weapon, but perhaps the best that he could lay his hands on at the moment."
"Very possible. How about these papers?"
"Three of them are receipted hay-dealers' accounts. One of them is a letter of instructions from Colonel Ross. This other is a milliner's account for thirty-seven pounds fifteen made out by Madame Lesurier, of Bond Street, to William Derbyshire. Mrs. Straker tells us that Derbyshire was a friend of her husband's and that occasionally his letters were addressed here."
"Madam Derbyshire had somewhat expensive tastes," remarked Holmes, glancing down the account. "Twenty-two guineas is rather heavy for a single costume. However there appears to be nothing more to learn, and we may now go down to the scene of the crime."
As we emerged from the sitting-room a woman, who had been waiting in the passage, took a step forward and laid her hand upon the Inspector's sleeve. Her face was haggard and thin and eager, stamped with the print of a recent horror.
"Have you got them? Have you found them?" she panted.
"No, Mrs. Straker. But Mr. Holmes here has come from London to help us, and we shall do all that is possible."
"Surely I met you in Plymouth at a garden-party some little time ago, Mrs. Straker?" said Holmes.
"No, sir; you are mistaken."
"Dear me! Why, I could have sworn to it. You wore a costume of dove-colored silk with ostrich-feather trimming."
"I never had such a dress, sir," answered the lady.
"Ah, that quite settles it," said Holmes. And with an apology he followed the Inspector outside. A short walk across the moor took us to the hollow in which the body had been found. At the brink of it was the furze-bush upon which the coat had been hung.
"There was no wind that night, I understand," said Holmes.
"None; but very heavy rain."
"In that case the overcoat was not blown against the furze-bush, but placed there."
"Yes, it was laid across the bush."
"You fill me with interest, I perceive that the ground has been trampled up a good deal. No doubt many feet have been here since Monday night."
"A piece of matting has been laid here at the side, and we have all stood upon that."
"In this bag I have one of the boots which Straker wore, one of Fitzroy Simpson's shoes, and a cast horseshoe of Silver Blaze."
"My dear Inspector, you surpass yourself!" Homes took the bag, and, descending into the hollow, he pushed the matting into a more central position. Then stretching himself upon his face and leaning his chin upon his hands, he made a careful study of the trampled mud in front of him. "Hullo!" said he, suddenly. "What's this?" It was a wax vesta half burned, which was so coated with mud that it looked at first like a little chip of wood.
"I cannot think how I came to overlook it," said the Inspector, with an expression of annoyance.
"It was invisible, buried in the mud. I only saw it because I was looking for it."
"What! You expected to find it?"
"I thought it not unlikely."
He took the boots from the bag, and compared the impressions of each of them with marks upon the ground. Then he clambered up to the rim of the hollow, and crawled about among the ferns and bushes.
"I am afraid that there are no more tracks," said the Inspector. "I have examined the ground very carefully for a hundred yards in each direction."
"Indeed!" said Holmes, rising.