Three couples are involved in a murder at Montecarlo.
Alberto Sordi
Alberto Franzetti
Vittorio Gassman
Remo
Nino Manfredi
Quirino
Dorian Gray
Eleonora Franzetti
Franca Valeri
Giovanna
Georges Rivière
Eleonora's Lover
Bernard Blier
Commissario Polizia
Silvana Mangano
Marina
Sylva Koscina
Carolina
Giulio Tomasini
Giambattista
Lamberto Antinori
Mario
Bianca Castagnetta
Caterina, la cameriera della villa
Mario Camerini
Director
Luciano Vincenzoni
Screenplay
Rodolfo Sonego
Giorgio Arlorio
Stefano Strucchi
Pino Calvi
Original Music Composer
Giuliana Attenni
Editor
Dino De Laurentiis
Producer
Story
Bruno Moreal
Sound
Conductor
Giuliano Laurenti
Makeup Artist
