A sister and her disturbed twin are implicated in a murder and a police detective must figure out which one's the killer.

Olivia de Havillandas Terry Collins / Ruth Collins
Lew Ayresas Scott Elliott
Thomas Mitchellas Lieutenant Stevenson
Richard Longas Rusty
Charles Evansas Girard
Garry Owenas Franklin
Lela Blissas Mrs. Didriksen
Lester Allenas George Benson
Bess Flowersas Nightclub Patron (uncredited)
Ida Mooreas Mrs. O'Brien (uncredited)
Milton Krasner