Mylène Demongeot as Virginie Dumayet Henri Vidal as Insp. Jean Morel Darry Cowl as Insp. Jérôme Béatrice Altariba as Olga Babitcheff Roger Hanin as Charlemagne Jean-Paul Belmondo as Pierrot Alain Delon as Loulou Robert Dalban as Insp. Gotterat François Darbon as Gino Gabrielle Fontan as Grand-mère de Jean René Lefèvre as Raphaël