"After her husband dies, a woman begins to have a nervous breakdown and is consoled by her younger sister. Soon, however, other members of the family begin to suspect the younger woman's motives."
Susan Strasberg
as Brenda
Faith Domergue
as Millie Hartman
Charles Robinson
as Jerry (as Charles Knox Robinson)
Kathleen Freeman
as Hilda
Sydney Chaplin
as George
John Ashton
as Brock
George E. Carey
as
Ben Frank
as Woody
Biff Yeager
as Bill
John Howard
as Dr. Thomas
Steve Mitchell
as Lt. Haze
Tony Crechales
Screenplay
Reginald Le Borg
Director
Robert J. Stone
Producer
William Tuttle
Makeup Effects
Herbert L. Strock
Editor
Dean Cundey
Director of Photography