In the oyster and fishing town of Arcachon, one man doesn't want his adopted son to get married to the daughter of his rival, and he suspects a dark underlying secret.
| Actor | Role |
|---|---|
 Blanchette BrunoyMarie-Louise Rocheteau | Marie-Louise Rocheteau |
 Fernand CharpinClovis | Clovis |
 Aimé ClariondRocheteau | Rocheteau |
 Line NoroLucette | Lucette |
 Raymond BussièresDomanger | Domanger |
| RRené DupuyJean | Jean |
| EEugène FrouhinsOld fisherman | Old fisherman |
 Gabrielle FontanArquebuse's sister | Arquebuse's sister |
| AAlbert TiluzeCoustus | Coustus |
 Charles LemontierGendarmerie Brigadier | Gendarmerie Brigadier |
 Edmond CastelBoss of the cafe | Boss of the cafe |
| GGérald CastrixInspector | Inspector |
 Eugène YvernèsClerk | Clerk |
 Michel VitoldInvestigating judge | Investigating judge |
| TTichadelArquebuse | Arquebuse |