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.

Gracie Allen
as Gracie Allen

Warren William
as Philo Vance

Ellen Drew
as Ann Wilson

Kent Taylor
as Bill Brown

Jed Prouty
as Uncle Ambrose

Jerome Cowan
as Daniel Mirche

Donald MacBride
as Dist. Atty. John, Markham

H.B. Warner
as Richard Lawrence

William Demarest
as Police Sgt. Ernest Heath

Judith Barrett
as Dixie Del Marr