The orphan Catherine Maguet, nicknamed "La grande Maguet", was taken in by a young and good chatelaine, Suzanne de Norvaisis. Edmond, the husband of the latter, during a trip abroad, falls madly in love with another and will go, to conquer this one, to poison his wife. Imprisoned then released, the lord will finally marry the one for whom he has become a criminal. But the great Maguet will avenge her beloved murdered benefactress...
| Actor | Role |
|---|---|
 Madeleine RobinsonCatherine Maguet | Catherine Maguet |
 Jean DavyEdmond de Norvaisis | Edmond de Norvaisis |
| BBéatrice LulliClaire | Claire |
 Michèle PhilippeSuzanne de Norvaisis | Suzanne de Norvaisis |
 Paul AmiotProfessor | Professor |
| FFernand GilbertChambon | Chambon |
 Palmyre LevasseurCook | Cook |
 Silvia MonfortAnaïs Arnold | Anaïs Arnold |
 Robert MoorDoctor | Doctor |
 Marcel PérèsBlacksmith | Blacksmith |
| JJean ReletHenry | Henry |
 Colette RégisBéatrice Arnold | Béatrice Arnold |
 Victor VinaPeasant | Peasant |
 Jean SylvèreNot listed | Not listed |
 Jacqueline Caurat(uncredited) | (uncredited) |
 Lisette Lebon(uncredited) | (uncredited) |
 Marcel Lévesque(uncredited) | (uncredited) |
 Olivier Mathot(uncredited) | (uncredited) |
| PPaul Ménager(uncredited) | (uncredited) |