Gian Maria Volonté

Enrico Mattei

Luigi Squarzina

liberal journalist

Peter Baldwin

William McHale

Renato Romano

journalist

Franco Graziosi

Minister of State partecipations

Gianfranco Ombuen

Mr. Ferrari, the engineer

Elio Jotta

head of the Committee of Inquiry

Luciano Colitti

Irnerio Bertuzzi

Edda Ferronao

Mrs. Mattei

Accursio Di Leo

Sicilian character

Terenzio Cordova

police officer

Giuseppe Lo Presti

Sicilian character

Camillo Milli

TV journalist

Aldo Barberito

Mauro De Mauro

Jean Rougeul

French journalist

Dario Michaelis

Carabinieri officer

Vittorio Fanfoni

journalist

Nino Drago

journalist

Néstor Garay

journalist

Felice Fulchignoni

Sicilian character

Sennuccio Benelli

Self / journalist

Furio Colombo

Mattei's assistant

Ugo Zatterin

Self / journalist

Blaise Morrissey

American oilman

Gianni Farneti

Self / journalist

Alessio Baume

"Time" journalist

Umberto D'Arrò

Self / journalist

Salvo Licata

Self / journalist

Giuseppe Rosselli

Self / journalist

Ferruccio Parri

Self (archival footage)

Michele Pantaleone

Self

Arrigo Benedetti

Self

Thyraud De Vosjoli

Self

Francesco Rosi

Self (uncredited)

Andrea Artoni

Self / flight assistant (uncredited)

Edy Biagetti

Mattei's bodyguard (uncredited)