Monsieur La Souris is a well-mannered tramp who opens car doors in front a nightclub. One evening, a car pulls up and a corpse spills out. Monsieur la Souris recuperates the wallet. The victim turns out to be a rich banker who was also a stamp collector, a fact which leads the tramp to finding the murderer.

Director: Georges Lacombe

Writer: Georges Simenon, Marcel Achard

Actors: Raimu, Aimé Clariond, René Bergeron

Production: N/A