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 .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.”
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