 Pierre BrasseurMaître Pierre Renneville | Maître Pierre Renneville |
 Monique MélinandDenise Lamarche | Denise Lamarche |
 François PatriceJacques | Jacques |
 Sophie LeclairGisèle | Gisèle |
 Henri NassietDoctor Marignan | Doctor Marignan |
 Alfred AdamGeorges Lamarche | Georges Lamarche |
 Jacqueline PorelLucienne Marignan | Lucienne Marignan |
 Odette LaureMadame Berthelin | Madame Berthelin |
 Albert DuvaleixPresident | President |
| MMarie-FranceNicole | Nicole |
 Michel EtcheverryGeneral Counsel | General Counsel |
 Lucienne Le MarchandMadame Lamarche mother | Madame Lamarche mother |
 Charles BouillaudSubstitute Barillier | Substitute Barillier |
 Pauline CartonMademoisellle Michel aka 'La Punaise' | Mademoisellle Michel aka 'La Punaise' |
 Alice TissotMadame Pitois aka 'La Pimbêche' | Madame Pitois aka 'La Pimbêche' |
 André GabrielloBerthelin | Berthelin |
 Marcelle ArnoldMadame Fournier (uncredited) | Madame Fournier (uncredited) |
 Henri CoutetA man (uncredited) | A man (uncredited) |
 Paul DemangeA regular (uncredited) | A regular (uncredited) |
| CCécile DidierHortense (uncredited) | Hortense (uncredited) |
 Jean LanierProfessor (uncredited) | Professor (uncredited) |
 Bernard MussonA man (uncredited) | A man (uncredited) |
 Roger VincentMedical Examiner (uncredited) | Medical Examiner (uncredited) |
