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"I could see that the end had not been in his mouth. Therefore he

used a holder. The tip had been cut off, not bitten off, but the

cut was not a clean one, so I deduced a blunt pen-knife."

"Holmes," I said, "you have drawn a net round this man from which

he cannot escape, and you have saved an innocent human life as

truly as if you had cut the cord which was hanging him. I see the

direction in which all this points. The culprit is-"

"Mr. John Turner," cried the hotel waiter, opening the door of

our sitting-room, and ushering in a visitor.