Michael York

Character: Robert Dominici

Edwige Fenech

Character: Hélène Martell

Donald Pleasence

Character: Inspector Datti

Mapi Galán

Character: Susanna

Fabio Sartor

Character: Davide

Renato Cortesi

Character: Agent Marchi

Antonella Ponziani

Character: Gloria Datti

Carola Stagnaro

Character: Dr. Carla Pesenti

Daniele Brado

Character: Dr. Vanni

Caterina Boratto

Character: Robert's Mother

Lewis E. Ciannelli

Character: Chief Physician

Renata Dal Pozzo

Character: Agent Corsi

Giovanni Lombardo Radice

Character: Father Giuliano

Gianni Franco

Character: Inspector

Marino Masé

Character: Aging Expert

Achille Brugnini

Character:

Giovanni Tamberi

Character: Andrea

Loris Loddi

Character: Danzil, a Cop

Hal Yamanouchi

Character: Swordmaster

Diego Verdegiglio

Character:

Raffaella Baracchi

Character: Laura, Venice Prostitute

Emy Valentino

Character:

Daniela Merlo

Character: Mother (uncredited)

Raf Baldassarre

Character: Man in Police Line-Up (uncredited)

Rossana Canghiari

Character: Party Guest (uncredited)

Lella Cattaneo

Character: Woman at Robert's Piano Concert (uncredited)

Ruggero Deodato

Character: Man That Gets on Moped at Station (uncredited)

Giuseppe Marrocco

Character: Man at Robert's Piano Concert (uncredited)

Benito Stefanelli

Character: Man in Restroom (uncredited)