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Marcello Mastroianni as Alex Sydne Rome as Nancy Henning Schlüter as Catone Romolo Valli as Giovanni Nerina Montagnani Dieter Hallervorden as German Richard McNamara as Charlie John Karlsen as Edward Hugh Griffith as Joseph Noblart Guido Alberti as Priest Pietro Tordi as Man-Servant Mogens von Gadow as German François Périer as Enzo Livio Galassi Carla Mancini Roman Polanski as Mosquito Alvaro Vitali as Cross-Eyed Painter Renate Langer as Naked Girl with Hat (uncredited)

Roman Polanski Screenplay, Director Claudio Gizzi Original Music Composer Gérard Brach Screenplay Marcello Gatti Director of Photography Carlo Ponti Producer