"Thank you for your introduction, Mr. Betteredge," he said. "I am indebted to the fisherman's wife for an entirely new sensation. Mrs. Yolland has puzzled me." It was on the tip of my tongue to have given him a sharp answer, for no better reason than this—that I was out of temper with him, because I was out of temper with myself. But when he owned to being puzzled, a comforting doubt crossed my mind whether any great harm had been done after all. I waited in discreet silence to hear more. "Yes," says the Sergeant, as if he was actually reading my thoughts in the dark. "Instead of putting me on the scent, it may console you to know, Mr. Betteredge (with your interest in Rosanna), that you have been the means of throwing me off. What the girl has done, to-night, is clear enough, of course.