Claude Chabrol Director, Writer Jean Poiret Inspecteur Jean Lavardin Actor Bernadette Lafont Hélène Mons Actor Jean-Claude Brialy Claude Alvarez Actor Jacques Dacqmine Raoul Mons Actor Jean-Luc Bideau Max Charnet Actor Hermine Claire Véronique Manguin Actor Pierre-Francois Dumeniaud Marcel Vigouroux Actor Florent Gibassier Francis Actor Guy Louret Buci Actor Jean Depusse Volga Actor Dominique Roulet Writer Marin Karmitz Producer Matthieu Chabrol Original Music Jean Rabier Cinematographer Monique Fardoulis Film Editing Françoise Benoît-Fresco Production Design Catherine Lapoujade Production Design Magali Fustier-Dray Costume Design Dominique Morlotti Costume Design