"After a twenty-year stay at an asylum for a double murder, a mother returns to her estranged daughter where suspicions arise about her behavior."
Joan Crawford
as Lucy Harbin
Diane Baker
as Carol Harbin
Leif Erickson
as Bill Cutler
Howard St. John
as Raymond Fields
John Anthony Hayes
as Michael Fields
Rochelle Hudson
as Emily Cutler
George Kennedy
as Leo Krause
Edith Atwater
as Mrs. Fields
Mitchell Cox
as Dr. Anderson
Lee Majors
as Frank Harbin (uncredited)
Patricia Crest
as Stella Fulton (uncredited)
Vicki Cos
as Carol Harbin - Age 3 (uncredited)
Lynn Lundgren
as Beautician (uncredited)
Robert Bloch
Screenplay
William Castle
Director
Producer
Herbert S. Greene
Assistant Director
Lambert E. Day
Sound
Ben Lane
Makeup Designer
Charles J. Rice
Sound Supervisor
Dona Holloway
Associate Producer
Peggy Shannon
Hairstylist
Monty Westmore
Makeup Artist
Virginia Jones
Hair Designer
Boris Leven
Production Design
Richard Albain
Special Effects
Van Alexander
Original Music Composer
Arthur E. Arling
Director of Photography
Edwin H. Bryant
Editor
Frank Tuttle
Set Decoration