The Unfaithful Wife

The Unfaithful Wife French La Femme infidle is a 1969 French film directed by Claude Chabrol. It was remade in English in 2002 as Unfaithful, directed by Adrian Lyne. The film had a total of 682,295 admissions in France.

By accident he discovers she was not at the hairdresser when she was meant to be. He gradually grows more suspicious about the way she employs her time and asks a private investigator to follow her. The embarrassed detective duly reports that his wife sees a writer called Victor Pgala, at his home in NeuillysurSeine, several times a week. Hlne appears in bed with Pgala, exchanging titbits about their respective lives. The writer is divorced with two children.On a day his wife is busy hosting a birthday party for their son, Desvalles pays Pgala a visit. At first he tells the confused writer jovially that he and his wife have an open marriage and sits and talks pleasantly with him. He asks for a tour of the small flat. On seeing the bed his demeanour changes, as he pictures his wife there. He spots a giant cigarette lighter at the bedside. This had been a 3rd anniversary present to his wife from him. He starts to feel unwell and suddenly grabs a stone bust and kills Pgala with a violent blow to the head. ........

Source: Wikipedia