Enrico Mattei
Gian Maria Volonté
liberal journalist
Luigi Squarzina
police officer
Terenzio Cordova
Sicilian character
Giuseppe Lo Presti
TV journalist
Camillo Milli
Mauro De Mauro
Aldo Barberito
French journalist
Jean Rougeul
Carabinieri officer
Dario Michaelis
journalist
Vittorio Fanfoni
Nino Drago
Néstor Garay
Felice Fulchignoni
William McHale
Peter Baldwin
Self / journalist
Sennuccio Benelli
Mattei's assistant
Furio Colombo
Ugo Zatterin
American oilman
Blaise Morrissey
Gianni Farneti
"Time" journalist
Alessio Baume
Umberto D'Arrò
Salvo Licata
Giuseppe Rosselli
Self (archival footage)
Ferruccio Parri
Renato Romano
Self
Michele Pantaleone
Arrigo Benedetti
Thyraud De Vosjoli
Self (uncredited)
Francesco Rosi
Self / flight assistant (uncredited)
Andrea Artoni
Mattei's bodyguard (uncredited)
Edy Biagetti
Minister of State partecipations
Franco Graziosi
Mr. Ferrari, the engineer
Gianfranco Ombuen
head of the Committee of Inquiry
Elio Jotta
Irnerio Bertuzzi
Luciano Colitti
Mrs. Mattei
Edda Ferronao
Accursio Di Leo
Producer
Franco Cristaldi
Editor
Ruggero Mastroianni
Production Manager
Gino Millozza
Director of Photography
Pasqualino De Santis
Original Music Composer
Piero Piccioni
Director
Screenplay
Story
Tonino Guerra
Co-Writer
Nerio Minuzzo
Tito De Stefano
First Assistant Director
Marco Guarnaschelli
Novel
Fulvio Bellini
Alessandro Previdi
Administration
Enzo Consolini
Assistant Camera
Giovanni Fiore Coltellacci
Production Assistant
Enzo Porcelli
Camera Operator
Mario Cimini
Sound
Mario Bramonti
Sound Mixer
Mario Morigi
Script Supervisor
Franca Invernizzi
Marcello Mastrogirolamo
Assistant Editor
Lea Mazzocchi
Unit Manager
Gian Maria Avetta
Antonio Sarno
Production Secretary
Giovanni Manganelli
Production Design
Andrea Crisanti
Costume Design
Franco Carretti