"What, then, do you suppose?"
"That only two glasses were used, and that the dregs of both were poured into a third glass, so as to give the false impression that three people had been here. In that way all the bees-wing would be in the last glass, would it not? Yes, I am convinced that this is so. But if I have hit upon the true explanation of this one small phenomenon, then in an instant the case rises from the commonplace to the exceedingly remarkable, for it can only mean that Lady Brackenstall and her maid have deliberately lied to us, that not one word of their story is to be believed, that they have some very strong reason for covering the real criminal, and that we must construct our case for ourselves without any help from them. That is the mission which now lies before us, and here, Watson, is the Chislehurst train."
The household of the Abbey Grange were much surprised at our return, but Sherlock Holmes, finding that Stanley Hopkins had gone off to report to head-quarters, took possession of the dining-room, locked the door upon the inside, and devoted himself for two hours to one of those minute and laborious investigations which formed the solid basis on which his brilliant edifices of deduction were reared. Seated in a corner like an interested student who observes the demonstration of his professor, I followed every step of that remarkable research. The window, the curtains, the carpet, the chair, the rope -- each in turn was minutely examined and duly pondered. The body of the unfortunate baronet had been removed, but all else remained as we had seen it in the morning. Then, to my astonishment, Holmes climbed up on to the massive mantelpiece. Far above his head hung the few inches of red cord which were still attached to the wire. For a long time he gazed upward at it, and then in an attempt to get nearer to it he rested his knee upon a wooden bracket on the wall. This brought his hand within a few inches of the broken end of the rope, but it was not this so much as the bracket itself which seemed to engage his attention. Finally he sprang down with an ejaculation of satisfaction.
"It's all right, Watson," said he. "We have got our case -- one of the most remarkable in our collection. But, dear me, how slow-witted I have been, and how nearly I have committed the blunder of my lifetime! Now, I think that with a few missing links my chain is almost complete."
"You have got your men?"
"Man, Watson, man. Only one, but a very formidable person. Strong as a lion -- witness the blow that bent that poker. Six foot three in height, active as a squirrel, dexterous with his fingers; finally, remarkably quick-witted, for this whole ingenious story is of his concoction. Yes, Watson, we have come upon the handiwork of a very remarkable individual. And yet in that bell-rope he has given us a clue which should not have left us a doubt."
"Where was the clue?"
"Well, if you were to pull down a bell-rope, Watson, where would you expect it to break? Surely at the spot where it is attached to the wire. Why should it break three inches from the top as this one has done?"
"Because it is frayed there?"