"Three couples are involved in a murder at Montecarlo."
Alberto Sordi
as Alberto Franzetti
Vittorio Gassman
as Remo
Nino Manfredi
as Quirino
Dorian Gray
as Eleonora Franzetti
Franca Valeri
as Giovanna
Georges Rivière
as Eleonora's Lover
Bernard Blier
as Commissario Polizia
Silvana Mangano
as Marina
Sylva Koscina
as Carolina
Giulio Tomasini
as Giambattista
Mario Meniconi
as Francesco
Lamberto Antinori
as Mario
Bianca Castagnetta
as Caterina, la cameriera della villa
Tino Scotti
as Fiorenzo, il proprietario del salone da barbiere
Rodolfo Sonego
Story
Luciano Vincenzoni
Screenplay
Mario Camerini
Director
Giorgio Arlorio
Stefano Strucchi
Gianni Di Venanzo
Director of Photography
Giuliana Attenni
Editor
Pino Calvi
Conductor
Original Music Composer
Piero Gherardi
Production Design
Bruno Brunacci
Sound
Dino De Laurentiis
Producer
Costume Design
Franco Di Mauro
Production Secretary
Giorgio Morra
Unit Manager
Bruno Moreal
Renata Magnanti
Hairstylist
Giuliano Laurenti
Makeup Artist
Pasqualino De Santis
Camera Operator
Mario Maffei
First Assistant Director
Fausto Saraceni
Line Producer
Rinaldo Ricci
Gaetano Marzacchi
Vito Anzalone
Set Decoration
Carla Fierro
Script Supervisor
Marcello De Stefano
Second Assistant Director
Lucia Mirisola
Assistant Costume Designer
