When a woman accidentally kills her detested husband, a selfless young man takes the blame and goes to prison. Complications ensue when he is provisionally released.

Super-sleuth Philo Vance faces the zaniest case of his career when Gracie Allen "helps" him try to solve the murder of an escaped convict. As she attempts to clear the name of a friend accused of the killing, her wacky, scatterbrained ways constantly impede the investigation.