La Bete Humaine (English: The Human Beast and Judas Was a Woman) is a 1938 French film directed by Jean Renoir, with cinematography by Curt Courant. The picture features Jean Gabin, and is loosely based on the novel of the same name by emile Zola.
La Bete Humaine is partially set "on a train that may be thought of as one of the main characters in the film." Although generally listed as a romantic drama, it is sometimes considered a precursor to the film noir genre.
(Summary from Wikipedia)