"With the help of his girlfriend Cathy and Dr. Fong, a psychiatrist, ambitious journalist Johnny Barrett poses as a madman in order to be admitted to a mental institution where a bloody murder has been committed."
Peter Breck
as Johnny Barrett
Constance Towers
as Cathy
Gene Evans
as Boden
James Best
as Stuart
Hari Rhodes
as Trent
Larry Tucker
as Pagliacci
Paul Dubov
as Dr. Menkin
Chuck Roberson
as Wilkes
Neyle Morrow
as Psycho
John Matthews
as Dr. Cristo
Bill Zuckert
as Swanee
John Craig
as Lloyd
Philip Ahn
as Dr. Fong
Frank Gerstle
as Police Lieutenant
Rachel Romen
as
Barbara Perry
Marlene Manners
Linda Randolph
Lucille Curtis
Jeanette Dana
Marie Devereux
Karen Conrad
Allison Daniell
Chuck Hicks
Wally Campo
Ray Baxter
Linda Barrett
Harry Fleer
Samuel Fuller
Director
Charles Duncan
Special Effects
Linwood G. Dunn
Visual Effects
Charles S. Thompson
Set Decoration
Rudolph C. Flothow
Production Manager
Floyd Joyer
Assistant Director
Herbert G. Luft
Producer's Assistant
Dan Greenway
Makeup Supervisor
Einar Bourman
Costumer
Philip Mitchell
Sound Recordist
Jon Gregory
Choreographer
Ray Mercer Jr.
Title Designer
Gordon Zahler
Sound Effects
Jack Lowry
Music Editor
Josef von Stroheim
Sound Effects Editor
Screenplay
Producer
Sam Firks
Executive Producer
Leon Fromkess
Stanley Cortez
Director of Photography
Jerome Thoms
Editor
Eugène Lourié
Art Direction
Paul Dunlap
Original Music Composer
Mary Chaffee
Script Supervisor
Music Supervisor
Costume Design