Les Biches

Les Biches is a 1968 French film directed by Claude Chabrol.

Youtube has it in short segments that will autoplay from here. Part 1: [These videos have been removed.]

trailer (no English subtitles):

Senses of Cinema says, "Chabrol has made the depiction of bourgeois decadence a recurring motif in his films, and Les Biches is no exception." The New York Times has a review. Roger Ebert says it "depends almost entirely on style, and as style it succeeds." Only the Cinema has a post on this film as part of the blogathon and calls it "a taut, unforgettable psychodrama from one of the masters of the form."