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Top Cast
David Hemmings
Marcus Daly
Daria Nicolodi
Gianna Brezzi
Gabriele Lavia
Carlo
Macha Méril
Helga Ulmann
Eros Pagni
Supt. Calcabrini
Giuliana Calandra
Amanda Righetti
Piero Mazzinghi
Bardi
Glauco Mauri
Prof. Giordani
Clara Calamai
Marta
Aldo Bonamano
Carlo's Father
Liana Del Balzo
Elvira
Vittorio Fanfoni
Cop Taking Notes
Dante Fioretti
Police Photographer
Geraldine Hooper
Massimo Ricci
Jacopo Mariani
Young Carlo
Furio Meniconi
Rodi
Fulvio Mingozzi
Agent Mingozzi
Lorenzo Piani
Fingerprint Cop
Salvatore Puntillo
Police Agent
Piero Vida
Fat Cop
Nicoletta Elmi
Olga
Dario Argento
Murderer's Hands (uncredited)
Salvatore Baccaro
Fruit Vendor (uncredited)
Omero Capanna
Hitman (uncredited)
Bruno Di Luia
Concerned Man in Restroom (uncredited)
Attilio Dottesio
Florist (uncredited)
Tom Felleghy
Surgeon (uncredited)
Glauco Onorato
(uncredited)
Marilù Tolo
Carol (archive footage) (uncredited)
Franco Vaccaro
Pietro Valgoi (uncredited)
Gianni Di Segni
Rabbi (uncredited)
Marc Smith
Professor Giordani (voice)
Mario Pascucci
Library Caretaker (uncredited)