Director/a
Dario Argento
DIRECTOR/A
Reparto (por orden de créditos)
James Franciscus
Carlo Giordani
Karl Malden
Franco Arnò
Catherine Spaak
Anna Terzi
Pier Paolo Capponi
Police Supt. Spimi
Horst Frank
Dr. Braun
Rada Rassimov
Bianca Merusi
Aldo Reggiani
Dr. Casoni
Carlo Alighiero
Dr. Calabresi
Vittorio Congia
Righetto - Cameraman
Ugo Fangareggi
Gigi - Loser
Tom Felleghy
Dr. Esson
Emilio Marchesini
Dr. Mombelli
Fulvio Mingozzi
Spimi's man
Corrado Olmi
Morsella
Pino Patti
Barber
Umberto Raho
Manuel's ex-lover
Jacques Stany
Prof. Manera
Stefano Oppedisano
Taxi driver
Ada Pometti
Telephone operator
Walter Pinelli
Terzi's Butler
Sascha Helwin
ACTOR
Marie Louise Sinclair
Film Starlet
Martial Boschero
Cinzia De Carolis
Lori
Werner Pochath
Manuel
Tino Carraro
Prof. Fulvio Terzi
Ettore Arena
Billiard Player (uncredited)
Aldo Barozzi
Client of Barber (uncredited)
Regina Elena Bisio
Lady Crossing the Street (uncredited)
Aristide Caporale
Smoker in the Billiard Hall (uncredited)
Manlio Dalla Pria
District Attorney (uncredited)
Giovanni Di Benedetto
Salmi - Chief of Police (uncredited)
Ferruccio Fregonese
Club Patron (uncredited)
Margherita Horowitz
Lori's Babysitter (uncredited)
Giuseppe Marrocco
Man at Table in the Saint Peter's Club (uncredited)
Gennarino Pappagalli
Man in the Terzi's Institute (uncredited)
Aldo Parenti
(uncredited)
Franco Ukmar
Policeman - Speaks with Morsella About Food (uncredited)