La Poison

1951, France, directed by Sacha Guitry

One of the most extraordinarily misogynistic films I've seen, as well as being very much of the postwar tradition of bitter, black, self-lacerating social examination in French film (the two may be linked, of course; several of those key French noirs are hardly kind to their central female characters, who are at times depicted as taking advantage of the men in their lives -- men rarely seem to have to take responsibility for themselves). 

Ginette Vincendeau's Criterion piece that accompanies the DVD of the film is extremely useful in providing the context for Guitry's tone, without ever defending the writer/director. 

Of note in the background: a rare non-comic role for Louis de Funès.