Millionaire sportsman Hiram Brighton hires gumshoe Michael Shayne to keep his spoiled daughter Phyllis away from racetrack betting windows and roulette wheels. After Phyllis slips away and continues her compulsive gambling, Shayne fakes the murder of her gambler boyfriend, who is also romancing the daughter of casino owner Benny Gordon, in order to frighten her. When the tout really ends up murdered, Shayne and Phyllis' Aunt Olivia, an avid reader of murder mysteries, both try to find the identity of the killer.
Lloyd Nolan
as Michael Shayne
Marjorie Weaver
as Phyllis Brighton
Joan Valerie
as Marsha Gordon
Walter Abel
as Elliott Thomas
Elizabeth Patterson
as Aunt Olivia
Donald MacBride
as Chief Peter Painter
Douglass Dumbrille
as Benny Gordon (as Douglas Dumbrille)
Clarence Kolb
as Hiram P. Brighton
George Meeker
as Harry Grange
Charles Coleman
as Ponsby
Adrian Morris
as Al
Robert Emmett Keane
as Larry Kincaid
