If I had watcehd this film without seeing the director's name on the opening credits, I would have bet my last shirt on Claude Chabrol, because of the subject, atmosphere - bourgeoisie, upper middle class critism - and actors directing. Yes, Claude Chabrol could have done this; after all, he did LANDRU, which takes place in the same period as this one, costume drama. Very brilliant movie, where Jean Paul Belmondo is absolutely great, complex, ambivalent.