 Albert PréjeanMaigret | Maigret |
 Juliette FaberBerthe | Berthe |
 Jean TissierMascouvin | Mascouvin |
 André GabrielloLucas | Lucas |
 Noël RoquevertLouis Dubief | Louis Dubief |
 Guillaume de SaxMaître Laignan | Maître Laignan |
 Édouard DelmontLe Cloaguen | Le Cloaguen |
 Antoine BalpêtréLe grand patron | Le grand patron |
 Henri VilbertAmadieu | Amadieu |
 Pierre PalauLe docteur Pierre | Le docteur Pierre |
 Gabrielle FontanLa soeur de Le Cloaguen | La soeur de Le Cloaguen |
 Colette RégisMadame Le Cloaguen | Madame Le Cloaguen |
| JJean-Marie BoyerLe petit employé (uncredited) | Le petit employé (uncredited) |
| AAlbert Brouett(uncredited) | (uncredited) |
 Henri Charrett(uncredited) | (uncredited) |
| RRaymond Dardelin(uncredited) | (uncredited) |
 Jean DastéLe clerc (uncredited) | Le clerc (uncredited) |
 Jean DaurandLe coursier (uncredited) | Le coursier (uncredited) |
 France Delahalle(uncredited) | (uncredited) |
 Jacques DenoëlJacques (uncredited) | Jacques (uncredited) |
 Marguerite DucouretMadame Cognet (uncredited) | Madame Cognet (uncredited) |
 Marcel DuhamelLe peintre (uncredited) | Le peintre (uncredited) |
 Pierre Ferval(uncredited) | (uncredited) |
| FFabienne Fortaire(uncredited) | (uncredited) |
 Édouard Francomme(uncredited) | (uncredited) |
 Georges Gosset(uncredited) | (uncredited) |
 Héléna MansonMarie, la bonne (uncredited) | Marie, la bonne (uncredited) |
 Maurice MarceauUn inspecteur (uncredited) | Un inspecteur (uncredited) |
 Frédéric MariottiLe garçon du buffet (uncredited) | Le garçon du buffet (uncredited) |
| MMaximilienneMadame Bertaud (uncredited) | Madame Bertaud (uncredited) |
