À double tour
Leda, the flirt of Monsieur Marcoux is murdered. His wife and the police think, that the murderer was the milk-man, the friend of the maid, but Marcoux' daughter's fiance Lazo, who is aware of the corrupt situation in that family doesn't agree with them.
Starring Madeleine Robinson, Antonella Lualdi, Jean-Paul Belmondo, Jeanne Valérie, Jacques Dacqmine, Bernadette Lafont, André Jocelyn, László Szabó, Mario David
Watch "À double tour" on Amazon released in 1959. It's a crime and drama movie, and has a rating of 6.6 out of 10 from Imdb which is usually fine for this kind of movie, and is currently only available for purchase or rent.