La Femme infidèle; Drama, France/ Italy, 1968; D: Claude Chabrol, S: Michel Bouquet, Stéphane Audran, Michel Duchaussoy, Maurice Ronet
Hélène is married to the respectable Charles and has a son who likes puzzles. They get visit from her mother who thinks that Charles gained weight. The relationship between the married couple cooled off and Charles even doubts she is cheating on him, so he hires a detective to spy on her. His fears are confirmed - she has an affair with writer Victor. Charles goes to his home and tells him that the affair doesn't bother him, but then suddenly takes a statue in his arms and kills him with it. He puts Victor's corpse into his car to throw it in the swamp. Two policemen pass by and question
Hélène because Victor disappeared. She discover Charles is the killer, but does not say anything.