James Franciscus

Carlo Giordani

Karl Malden

Franco Arnò

Catherine Spaak

Anna Terzi

Pier Paolo Capponi

Police Supt. Spini

Horst Frank

Dr. Braun

Rada Rassimov

Bianca Merusi

Aldo Reggiani

Dr. Casoni

Carlo Alighiero

Dr. Calabresi

Vittorio Congia

Righetto (cameraman)

Ugo Fangareggi

Gigi the 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

Sascha Helwin

Marie Louise Sinclair

Film starlet

Martial Boschero

Cinzia De Carolis

Lori

Werner Pochath

Manuel

Tino Carraro

Prof. Fulvio Terzi

Ettore Arena

Billiard Player (uncredited)

Aristide Caporale

Smoker in the Billiard Hall (uncredited)

Giovanni Di Benedetto

Chief of Police Salmi (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)

Dario Argento

Director

Roberto Pariante

Asistente de Dirección

Dario Argento

Guión, Guión Adaptado, Historia

Luigi Cozzi

Guión, Historia

Dardano Sacchetti

Guión, Historia

Bryan Edgar Wallace

Guión Adaptado

Erico Menczer

Director de Fotografía

Roberto Brega

Camera Operator

Firmino Palmieri

Still Photographer

Giuseppe Gabrielli

Grip

Ettore Migalizzi

Grip

Giovanni Migalizzi

Grip

Arturo de Castelterlango

First Assistant Camera

Renato Mascagno

First Assistant Camera

Maurizio Migalizzi

Key Grip

Maurizio La Monica

Second Assistant Camera

Ennio Morricone

Compositor de la Música Original

Massimo Anzellotti

Sound Effects Editor

Eugenio Fiori

Boom Operator

Mario Ronchetti

Sound

Bruno Nicolai

Conductor

Luciano Anzellotti

Sound Effects

Salvatore Argento

Productor

Seda Spettacoli

Compañía de Produccion

Terra Film

Compañía de Produccion

Labrador Films

Compañía de Produccion

Angelo Iacono

Production Manager

Giuseppe Mangogna

Production Manager

Carlo Du Bois

Production Accountant, Administration

Roberta Leoni

Production Secretary

Maura Turchi

Estilista

Giuseppe Ferranti

Maquilladora

Pierantonio Mecacci

Maquilladora

Carlo Leva

Diseño de Vestuario

Luca Sabatelli

Diseño de Vestuario

Vincenzo Marchetti

Assistant Makeup Artist

Franco Fraticelli

Editor

Cesarina Casini

First Assistant Editor

Sergio Fraticelli

Assistant Editor

Carlo Leva

Diseño de Producción

Luciano Vittori

Title Designer

Romeo Costantini

Assistant Set Decoration

Franco Pedacchia

Assistant Production Design

Luciano Vittori

Visual Effects

Romano Pampaloni

Sound Recordist

Lamberto Verdenelli

Property Master

Alberico Loreti

Best Boy Electric

Rodolfo Flibotti

Gaffer

Roberto Bertozzi

Electrician

Francesco Rachini

Electrician

Carlo Vinciguerra

Electrician