Calificación
Reparto

Stuart Whitman
Dale Nelson / Arthur

Carol Lynley
Cynthia Lee Albright

Roddy McDowall
Martin Ashley

Lauren Bacall
Dr. Edwina Beighley

Olive Deering
Mrs. Mellon

Ossie Davis
Capshaw

Donald Buka
Psychologist

Paulene Myers
Dr. Walden (as Pauline Myers)

Evadne Baker
Intern

Robert J. Wilke
Technician Mike Newton (as Robert Wilke)

Bert Freed
Frank Josephson

Judith De Hart
Matron

Judson Laire
Harley Manning

Jonathan Gilmore
A Young Mental Patient

Templeton Fox
Miss Lindsey

William Douglas
Paranoid Patient