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.
| Actor | Role |
|---|---|
 RaimuAntonin Ramatuel / Monsieur La Souris | Antonin Ramatuel / Monsieur La Souris |
 Aimé ClariondSimon Negretti | Simon Negretti |
 Paul AmiotCommissioner Lucas | Commissioner Lucas |
 Raymond AimosMonsieur Cupidon | Monsieur Cupidon |
 Charles GranvalLaborde | Laborde |
 René BergeronInspector Lognon | Inspector Lognon |
| PPierre JourdanFrédéric Muller | Frédéric Muller |
 Marcel MelracJim | Jim |
 Jo DervoFred | Fred |
 Micheline FranceyLucile Boisvin | Lucile Boisvin |
 Marie CarlotDora | Dora |
 Gilbert GilChristian Osting | Christian Osting |
 Paul DemangeFat lady’s husband (uncredited) | Fat lady’s husband (uncredited) |
 Max Doria(uncredited) | (uncredited) |
 Fernand Flament(uncredited) | (uncredited) |
| MMadhyanah Foy(uncredited) | (uncredited) |
 Émile GenevoisHunter (uncredited) | Hunter (uncredited) |
 Georges Gosset(uncredited) | (uncredited) |
| PPaule LanglaisYoung woman (uncredited) | Young woman (uncredited) |
 Robert Le FortCoffee boy (uncredit) | Coffee boy (uncredit) |
 Made SiaméFat lady (uncredited) | Fat lady (uncredited) |