A Crime Club Selection. From Dust Jacket flap: Backed by skillful, probing research, this exciting story takes the reader behind the scenes into the fascinating little-known world of the detectives who protect our mails..."Why was she being blackmailed? And why, after Postal Inspector David Madden had told her that she would have to reveal her past life if the blackmailer were caught, had she so suddenly refused his help. When a battered corpse was discovered in her back yard, she swiftly changed her mind. A simple case of blackmail had suddenly become a brutal one of murder..."
Used availability for Doris Miles Disney's Unappointed Rounds