Jessica Harper

Suzy Bannion

Stefania Casini

Sara

Flavio Bucci

Daniel

Miguel Bosé

Mark

Barbara Magnolfi

Olga

Susanna Javicoli

Sonia

Eva Axén

Pat Hingle

Rudolf Schündler

Prof. Milius

Udo Kier

Dr. Frank Mandel

Alida Valli

Miss Tanner

Joan Bennett

Madame Blanc

Margherita Horowitz

Teacher

Jacopo Mariani

Albert

Fulvio Mingozzi

Taxi Driver

Franca Scagnetti

Cook

Renato Scarpa

Prof. Verdegast

Giuseppe Transocchi

Pavlo

Renata Zamengo

Caroline

Dario Argento

Narrator (voice) (uncredited)

Daria Nicolodi

Woman at Airport (uncredited)

Marina Pierro

Figurant (uncredited)

Lela Svasta

Helena Markos (uncredited)