Sir Arthur Conan Doyle: Memoirs of Sherlock Holmes

1. Adventure I: Silver Blaze (continued)

"I confess," said he, "that any theories which I had formed from the newspaper reports were entirely erroneous. And yet there were indications there, had they not been overlaid by other details which concealed their true import. I went to Devonshire with the conviction that Fitzroy Simpson was the true culprit, although, of course, I saw that the evidence against him was by no means complete. It was while I was in the carriage, just as we reached the trainer's house, that the immense significance of the curried mutton occurred to me. You may remember that I was distrait, and remained sitting after you had all alighted. I was marvelling in my own mind how I could possibly have overlooked so obvious a clue."

"I confess," said the Colonel, "that even now I cannot see how it helps us."

"It was the first link in my chain of reasoning. Powdered opium is by no means tasteless. The flavor is not disagreeable, but it is perceptible. Were it mixed with any ordinary dish the eater would undoubtedly detect it, and would probably eat no more. A curry was exactly the medium which would disguise this taste. By no possible supposition could this stranger, Fitzroy Simpson, have caused curry to be served in the trainer's family that night, and it is surely too monstrous a coincidence to suppose that he happened to come along with powdered opium upon the very night when a dish happened to be served which would disguise the flavor. That is unthinkable. Therefore Simpson becomes eliminated from the case, and our attention centers upon Straker and his wife, the only two people who could have chosen curried mutton for supper that night. The opium was added after the dish was set aside for the stable-boy, for the others had the same for supper with no ill effects. Which of them, then, had access to that dish without the maid seeing them?

"Before deciding that question I had grasped the significance of the silence of the dog, for one true inference invariably suggests others. The Simpson incident had shown me that a dog was kept in the stables, and yet, though some one had been in and had fetched out a horse, he had not barked enough to arouse the two lads in the loft. Obviously the midnight visitor was some one whom the dog knew well.