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 NolanMichael Shayne
Marjorie WeaverPhyllis Brighton
Joan ValerieMarsha Gordon
Walter AbelElliott Thomas
Elizabeth PattersonAunt Olivia
Donald MacBrideChief Peter Painter
Douglass DumbrilleBenny Gordon (as Douglas Dumbrille)
Clarence KolbHiram P. Brighton
George MeekerHarry Grange
Charles ColemanPonsby
Adrian MorrisAl
Robert Emmett KeaneLarry Kincaid
Frank OrthSteve
Irving BaconFisherman
Don BrodieReporter (uncredited)
