Marcello Mastroianni as Commissioner Salvatore Santamaria

Jacqueline Bisset as Anna Carla Dosio

Jean-Louis Trintignant as Massimo Campi

Aldo Reggiani as Lello Riviera

Maria Teresa Albani as Virginia Tabusso

Omero Antonutti as Benito

Gigi Ballista as Vollero

Fortunato Cecilia as Nicosia

Claudio Gora as Garrone

Franco Nebbia as Bonetto

Lina Volonghi as Ines Tabusso

Pino Caruso as Police Commissioner De Palma

Mario Ferrero as Vittorio Dosio

Giuseppe Anatrelli as Chief of Police

Antonio Orlando as Barber

Ginette Marcelle Bron as

Jean-Claude Clément as

Antonino Faà di Bruno as Paolo Campi

Massimo Giuliani as Young Man in Trattoria

Mauro Vestri as Ragionier Giancarlo Cerioni

Ennio Antonelli as Zavattaro

Dante Fioretti as Geometra Bauchiero

Tina Lattanzi as Massimo's Mother

Clara Bindi as Benito's Wife

Eleonora Spinelli as

Nancy Lecchini as Colleague of Cerioni

Aurelio Bertola as

Gil Cagnè as Coiffeur (uncredited)

Guglielmo Molasso as Pepper Mill Seller (uncredited)