This film is scereening as part of the Passport to Cinema season and is introduced by Richard Combs.
Time Out review:
The film with which Chabrol returned to 'serious' film-making after his series of delightful thriller/espionage spoofs, this was also the film in which he began transferring his allegiance from baroque Hitchcockery to the bleak geometry of Lang. A calm, exquisite study, set in an autumnal Riviera, of the permutational affairs of one man and two women which lead to obsession, madness and despair. Each sequence is like a question-mark adding new doubts and hypotheses to the circular (as opposed to triangular) relationship as a rich lady of lesbian leanings (Audran) picks up an impoverished girl (Sassard), and whisks her off to her St Tropez villa. There, much to the distress of her benefactress, the girl embarks on an affair with a handsome young architect (Trintignant), only to find in her turn that architect and lesbian lady are in the throes of a mutual passion. Impeccably performed, often bizarrely funny, the film winds, with brilliant clarity, through a maze of shadowy emotions to a splendidly Grand-Guignolesque ending.
Here (and above) is the opening of the film.