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 Havilland
as Terry / Ruth Collins
Lew Ayres
as Dr. Scott Elliott
Thomas Mitchell
as Lt. Stevenson
Richard Long
as Rusty
Charles Evans
as Dist. Atty. Girard
Garry Owen
as Franklin
Lela Bliss
as Mrs. Didriksen
Lester Allen
as George Benson
Bess Flowers
as Nightclub Patron (uncredited)
Ida Moore
as Mrs. O'Brien (uncredited)
Jean Andren
as District attorney's secretary (uncredited)
Marta Mitrovich
as Miss Beade (uncredited)
