On a rainy night, eccentric tramp Mr. La Souris finds a corpse. But the body soon vanishes in his car leaving only his wallet. While the police start investigating a missing person report, La Souris concocts a plan to secure his find.
Raimu
as Antonin Ramatuel / Monsieur La Souris
Aimé Clariond
as Simon Negretti
Paul Amiot
as Commissioner Lucas
Raymond Aimos
as Monsieur Cupidon
Charles Granval
as Laborde
René Bergeron
as Inspector Lognon
Pierre Jourdan
as Frédéric Muller
Marcel Melrac
as Jim
Jo Dervo
as Fred
Micheline Francey
as Lucile Boisvin
Marie Carlot
as Dora
Gilbert Gil
as Christian Osting
