"Yes, they didn't give you any too much time to miss them. Well, I think the rest's pretty clear. I brought the tracings in here, screwed up the sham stick and put it back. You identified the tracings and found none missing, and then my course was pretty clear, though it looked difficult. I knew you would be very naturally indignant with Ritter, so, as I wanted to manage him myself, I told you nothing of what he had actually done, for fear that, in your agitated state, you might burst out with something that would spoil my game. To Ritter I pretended to know nothing of the return of the drawings or _how_ they had been stolen--the only things I did know with certainty. But I _did_ pretend to know all about Mirsky--or Hunter--when, as a matter of fact, I knew nothing at all, except that he probably went under more than one name. That put Ritter into my hands completely. When he found the game was up he began with a lying confession. Believing that the tracings were still in the stick and that we knew nothing of their return, he said that they had not been away, and that he would fetch them--as I had expected he would. I let him go for them alone, and when he returned, utterly broken up by the discovery that they were not there, I had him altogether at my mercy. You see, if he had known that the drawings were all the time behind your book-case, he might have brazened it out, sworn that the drawings had been there all the time, and we could have done nothing with him. We couldn't have sufficiently frightened him by a threat of prosecution for theft, because there the things were, in your possession, to his knowledge. "As it was, he answered the helm capitally: gave us Mirsky's address on the envelope, and wrote the letter that was to have got him out of the way while I committed burglary, if that disgraceful expedient had not been rendered unnecessary. On the whole, the case has gone very well." "It has gone marvellously well, thanks to yourself. But what shall I do with Ritter?" "Here's his stick--knock him downstairs with it, if you like. I should keep the tube, if I were you, as a memento. I don't suppose the respectable Mirsky will ever call to ask for it. But I should certainly kick Ritter out of doors--or out of window, if you like--without delay." [Illustration: "KNOCK HIM DOWNSTAIRS."] Mirsky was caught, and after two remands at the police-court was extradited on the charge of forging Russian notes. It came out that he had written to the Embassy, as Hewitt had surmised, stating that he had certain valuable information to offer, and the letter which Hewitt had seen delivered was an acknowledgment, and a request for more definite particulars. This was what gave rise to the impression that Mirsky had himself informed the Russian authorities of his forgeries. His real intent was very different, but was never guessed.