Cynthia Hichcock
Barbara Steele
Prof. Bernard Hichcock
Robert Flemyng
Howard Nelson Rubien
Dr. Kurt Lowe
Silvano Tranquilli
Margherita Hichcock
Maria Teresa Vianello
Martha, the maid
Harriet Medin
Spencer Williams
Al Christianson
Inspector Scott
Evaristo Signorini
Giovanni Querrel
Neil Robinson
Music
Roman Vlad
Writer
Ernesto Gastaldi
Director
Riccardo Freda
Costume Design
Italia Scandariato
Makeup Artist
Euclide Santoli
Producer
Luigi Carpentieri
Production Supervisor
Charles Law
Assistant Director
John M. Farquhar
Editor
Ornella Micheli
Art Direction
Joseph Goodman
Hairstylist
Annette Winter
Production Design
Franco Fumagalli
Sound
Jackson McGregor
Production Manager
Lou D. Kelly
Ermanno Donati
Director of Photography
Raffaele Masciocchi