Relative to Poison is a 1947 detective novel by E.C.R. Lorac, the pen name of the British writer Edith Caroline Rivett.[1][2] It is the twenty ninth in her long-running series featuring Chief Inspector MacDonald of Scotland Yard, one of the detectives of the Golden Age of Detective Fiction who relies on standard police procedure to solve his cases.[3]
A recently demobbed ATS girl is offered employment in a Regent Street café, and takes her friend along. Before long they find themselves embroiled in a case of murder
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