Jessica Harper

Character: Suzy Bannion

Stefania Casini

Character: Sara

Flavio Bucci

Character: Daniel

Miguel Bosé

Character: Mark

Barbara Magnolfi

Character: Olga

Susanna Javicoli

Character: Sonia

Eva Axén

Character: Pat Hingle

Rudolf Schündler

Character: Prof. Milius

Udo Kier

Character: Dr. Frank Mandel

Alida Valli

Character: Miss Tanner

Joan Bennett

Character: Madame Blanc

Margherita Horowitz

Character: Teacher

Jacopo Mariani

Character: Albert

Fulvio Mingozzi

Character: Taxi Driver

Franca Scagnetti

Character: Cook

Renato Scarpa

Character: Prof. Verdegast

Serafina Scorceletti

Character: 2nd Cook

Giuseppe Transocchi

Character: Pavlo

Renata Zamengo

Character: Caroline

Alessandra Capozzi

Character: Dancer

Salvatore Capozzi

Character: Dancer

Diana Ferrara

Character: Dancer

Cristina Latini

Character: Dancer

Alfredo Raino

Character: Dancer

Claudia Zaccari

Character: Dancer

Dario Argento

Character: Narrator (voice) (uncredited)

Daria Nicolodi

Character: Woman at Airport (uncredited)

Marina Pierro

Character: Figurant (uncredited)