Gian Maria Volonté
Dottore
Florinda Bolkan
Augusta Terzi
Gianni Santuccio
Police Prefect
Orazio Orlando
Biglia
Sergio Tramonti
Antonio Pace
Arturo Dominici
Mangani
Aldo Rendine
Nicola Panunzio
Massimo Foschi
Augusta's Husband
Aleka Paizi
Governess
Vittorio Duse
Canes
Pino Patti
Wiretapping Dep. Head
Salvo Randone
Plumber
Fulvio Grimaldi
Patanè
Giuseppe Aguinaldo Nicastro
Filippo De Gara
Ugo Adinolfi
Franco Marletta
Giacomo Bellini
Giuseppe Terranova
Vincenzo Falanga
Roberto Bonanni
Guido Buzzelli
Gino Usai
Calogero Azzaretto
Man Listening the Speech of Dottore (uncredited)
Gianfranco Barra
Interrogation Officer (uncredited)
Aristide Caporale
Man at Police Headquarters (uncredited)
Ettore Geri
Officer Attending the Final Confession (uncredited)
Alfonso Giganti
Policeman (uncredited)
Franco Magno
Officer Attending the Final Confession (uncredited)
Enrico Marciani
Officer Attending the Final Confession (uncredited)
Enzo Mondino
Officer Attending the Final Confession (uncredited)
Mario Pascucci
Policeman (uncredited)
Fulvio Pellegrino
Policeman Listening the Speech of Dottore (uncredited)
Elio Petri
Policeman Sleeping During Dottore's Address (uncredited)
Mario Silvestri
Officer Attending the Final Confession (uncredited)
Alessandro Tedeschi
Man Listening to Speech (uncredited)
Armando Tortorici
Arrested Contestant (uncredited)
Romano Moraschini
Policeman (uncredited)
Ugo Ballester
Officer Attending the Final Confession (uncredited)