A sister and her disturbed twin are implicated in a murder and a police detective must figure out which one's the killer.
as Terry Collins / Ruth Collins
as Dr. Scott Elliott
as Lt. Stevenson
as Rusty
as Dist. Atty. Girard
as Franklin
as Mrs. Didriksen
as George Benson
as Nightclub Patron (uncredited)
as Mrs. O'Brien (uncredited)
as District attorney's secretary (uncredited)
as Miss Beade (uncredited)
as Waiter (uncredited)
as Photo-double (uncredited)
as Sergeant Temple (uncredited)
as Janitor O'Brien (uncredited)
as Policeman (uncredited)
as Dumb cop (uncredited)
as Police Lieutenant (uncredited)
as Intern (uncredited)
