À cause, à cause d'une femme (1963)

Rémi, a handsome, flirtatious womanizer, flits from one girl to another without ever getting attached. He leaves Chloé for Agathe, while letting sweet Lisette love him. Out of jealousy, Chloé unjustly accuses him of murdering her fiancé, Olivier. Rémi manages to escape the police thanks to Lisette and Agathe, who join forces to help their handsome, unfaithful man. The trio conducts its own investigation, following the trail of Johann Muller, whom Rémi spotted at the crime scene. They find the Paris hotel where Muller is staying with his friend Cécilia. Lisette takes a room there to spy on them. But Johann Muller proves his innocence and helps Rémi evade the police, who have tracked him to the hotel. Rémi falls madly in love with Cécilia, who will feel nothing for him but friendship. He will be cleared thanks to the intervention of his two loves-in-arms, who unmask the culprit. But for the first time in his life, Rémi will be unhappy because—because of a woman.