Suzy Bannion
Jessica Harper
Sara
Stefania Casini
Madame Blanc
Joan Bennett
Teacher
Margherita Horowitz
Albert
Jacopo Mariani
Taxi Driver
Fulvio Mingozzi
Cook
Franca Scagnetti
Prof. Verdegast
Renato Scarpa
2nd Cook
Serafina Scorceletti
Pavlo
Giuseppe Transocchi
Caroline
Renata Zamengo
Dancer
Alessandra Capozzi
Daniel
Flavio Bucci
Salvatore Capozzi
Diana Ferrara
Cristina Latini
Alfredo Raino
Claudia Zaccari
Narrator (voice) (uncredited)
Dario Argento
Police Inspector (uncredited)
Giovanni di Bernardo
Woman at Airport (uncredited)
Daria Nicolodi
Figurant (uncredited)
Marina Pierro
Helena Markos (uncredited)
Lela Svasta
Mark
Miguel Bosé
Olga
Barbara Magnolfi
Sonia
Susanna Javicoli
Pat Hingle
Eva Axén
Prof. Milius
Rudolf Schündler
Dr. Frank Mandel
Udo Kier
Miss Tanner
Alida Valli
Editor
Franco Fraticelli
Director of Photography
Luciano Tovoli
Original Music Composer
Claudio Simonetti
Screenplay
Director
Novel
Thomas De Quincey
Massimo Morante
Fabio Pignatelli
Producer
Claudio Argento
Agostino Marangolo
Executive Producer
Salvatore Argento
Production Design
Giuseppe Bassan
Sound Editor
Massimo Anzellotti
Makeup Supervisor
Pierantonio Mecacci
Sound Effects
Luciano Anzellotti
Sound Recordist
Mario Dallimonti
Assistant Art Director
Davide Bassan
Gaffer
Alberto Altibrandi
Seamstress
Bertilla Silvestrin
Special Effects
Germano Natali
Hairstylist
Maria Teresa Corridoni
Costume Design
Pierangelo Cicoletti
Still Photographer
Francesco Bellomo
ADR & Dubbing
Nick Alexander
Maurizio Garrone
Camera Operator
Idelmo Simonelli
Assistant Camera
Giuseppe Tinelli
Enrico Fontana
Boom Operator
Corrado Volpicelli
Key Grip
Mario Moreschini
Sound Designer
Federico Savina