WE WENT BACK INTO THE house and Maud, with a smile at me, said: “Keeley, I asked our super-sleuth, March, to scout around for a stray copy of that book that has in it the story of The Nail, and Graysie, here, is mad at me.” “Nonsense!” I cried, “I’m not. But I daresay there were some thousands of copies of the book printed, and if, when and as you find one, you can’t at once assume that you have hit upon the murderer of Sampson Tracy.” “That story is Maud’s angle of the case,” Kee said. “Her own exclusive property and she must be allowed to exploit it as she likes. I’m free to confess I haven’t much faith in it as a pointer, but I will say if the book is found on the bedside table of anyone who benefits by Sampson Tracy’s death, it will be a lead that must be followed up.” “Oh, all rig

