"A doctor treats a woman suffering from multiple personality disorder."
Joanne Woodward
as Eve White / Eve Black / Jane
David Wayne
as Ralph White
Lee J. Cobb
as Doctor Curtis Luther
Edwin Jerome
as Doctor Francis Day
Alena Murray
as Secretary
Nancy Kulp
as Mrs. Black
Douglas Spencer
as Mr. Black
Terry Ann Ross
as Bonnie White
Ken Scott
as Earl
Mimi Gibson
as Eve (as a child)
Alistair Cooke
as Himself (prologue narrator)
Mary Field
as Effie, sales clerk
Vince Edwards
as Army Sergeant (uncredited)
as Effie Blanford (uncredited)
Richard Garrick
as Mr. Fox (uncredited)
Helene Hatch
as Landlady (uncredited)
Jimmie Horan
as Man at Funeral (uncredited)
Catherine Howard
as Switchboard Operator (uncredited)
Jason Johnson
as Boy (uncredited)
Dick Johnstone
Frank Marlowe
as Hotel Clerk (uncredited)
Wanda Perry
as Nurse (uncredited)
Joe Rudán
as Sailor (uncredited)
Gary Spencer
as Bartender (uncredited)
Al Thompson
Rush Williams
as Leonard - Hospital Orderly (uncredited)
Nunnally Johnson
Director
Screenplay
Corbett Thigpen
Author
Producer
Robert Emmett Dolan
Music
Stanley Cortez
Director of Photography
Marjorie Fowler
Editor
Herman A. Blumenthal
Art Direction
Lyle R. Wheeler
Eli Benneche
Set Decoration
Walter M. Scott
Renié
Costume Design
Ben Nye
Makeup Artist
Helen Turpin
Hairstylist
Gaston Longet
Still Photographer
