Gian Maria Volonté

M.

Marcello Mastroianni

Don Gaetano

Mariangela Melato

Giacinta

Ciccio Ingrassia

Voltrano

Franco Citti

M.'s Driver

Cesare Gelli

Arras

Tino Scotti

Hotel Zafer Cook

Adriano Amidei Migliano

Minister Capra Profiri

Giancarlo Badessi

Ventre

Mario Bartolomei

Franco Lombo

Nito Costa

Young Priest

Guerrino Crivello

Speaker Priest

Marcella Di Falco

Saccà

Giulio Donnini

Bastante

Aldo Farina

Restrero

Giuseppe Leone

Senator Martellini

Renato Malavasi

Michelozzi

Riccardo Mangano

Cardinal Beccarisi

Piero Mazzinghi

Caprarozza

Lino Murolo

Mozio

Piero Nuti

Schiavò

Loris Pereira Lopez

Senator Lombo

Riccardo Satta

Lomazzo

Luigi Uzzo

Aldo Lombo

Luigi Zerbinati

Caudo

Renato Salvatori

Magistrate Scalambri

Michel Piccoli

Him

Lella Cattaneo

Capra Porfiri's Mother (uncredited)

Giuseppe Marrocco

Spiritual Practitioner (uncredited)

Aldo Valletti

Spiritual Practitioner (uncredited)

Bruno Bertocci

Spiritual Practitioner (uncredited)

Mario Castaldi

Spiritual Practitioner (uncredited)

Osvaldo Peccioli

Spiritual Practitioner (uncredited)

Cesare Nizzica

Spiritual Practitioner (uncredited)

Amedeo Salamon

Spiritual Practitioner (uncredited)

Domenico Demitri

Spiritual Practitioner (uncredited)

Carlo Cattaneo

Spiritual Practitioner (uncredited)

Franz Colangeli

Spiritual Practitioner (uncredited)

Franco Laitano

Spiritual Practitioner (uncredited)

Filippo Perego

Spiritual Practitioner (uncredited)

Mario Pascucci

Spiritual Practitioner (uncredited)

Maurizio Piacenti

Spiritual Practitioner (uncredited)

Antonio Pane

Spiritual Practitioner (uncredited)

Luciano Zanussi

Spiritual Practitioner (uncredited)

Luigi Scavran

Spiritual Practitioner (uncredited)

Vezio Natili

Hotel Zafer Receptionist (uncredited)

Maurizio Streccioni

Hotel Zafer Bodyguard (uncredited)

Decio Gambini

Senator Lombo's Driver (uncredited)