Night at the Crossroads (1932)

A diamond merchant is found dead, murdered, inside a car near a gloomy, muddy, foggy French crossroads. Nearby lays a villa, a broken down garage and gas station, and a house next to it. A one-eyed Dane and his slatternly sister are the initial suspects, but with the arrival of the great French inspector Maigret (Pierre Renoir), it becomes clear that far more is going on than a simple case of murder. Incredibly atmospheric, with much of the footage shot at night. You can almost feel the fog seeping in.