A bright, shiny tin can in a dark, cobwebby corner of the cellar preserve shelf — unlabelled and empty! Mrs. Gentrie, the meticulous hose-wife, was annoyed but not too upset. Her sister-in-law Rebecca was exited and suspicious. Delman Steele, their new young boarder, was quietly interested... Then things began to happen. A man and his housekeeper were found missing from the house next door. Willful old Elston Karr, who used to run guns up the Yangtze and was now confined to a Wheel-chair in the flat above the missing man’s apartment, retained Mason to protect him from — well, Mason wasn’t quite sure himself. But his mind began to work fast. Then Mason heard about the empty tin can. It interested him — a lot. All our old friends are here, Della Street, Paul Drake, Lieutenant Tragg, in a mystery so fast and exiting that it has been called “even better than Gardner.”