A ship, La Circé, has sunk and it might possibly be criminal . The vessel belongs to Storata ,who asks the insurance company for a hundred million Francs .Callaghan is working for them and he investigates on dry land and on the sea. The brilliant detective discovers that Storata has scuttled his ship himself to swindle insurance.
| Actor | Role |
|---|---|
 Tony WrightSlim Callaghan | Slim Callaghan |
 Lysiane ReyDolorès | Dolorès |
 Colette RipertManon Gardel | Manon Gardel |
 Paul CamboNicky Storata | Nicky Storata |
| RRobert BerriRaoul de Bois-Joli aka 'le Vicomte' | Raoul de Bois-Joli aka 'le Vicomte' |
 Yorick RoyanDenise Gardel | Denise Gardel |
 Roger BlinWladimir | Wladimir |
 Martine AlexisKetty | Ketty |
 Raymond CordyThe doorman | The doorman |
 Joé DavrayNot listed | Not listed |
 Paul DemangeThe bartender | The bartender |
 Maurice BénardBoutillon | Boutillon |
 Robert BurnierNicholls | Nicholls |
 Henri AriusCommissioner Merlin (uncredited) | Commissioner Merlin (uncredited) |
 Claude Cerval(uncredited) | (uncredited) |
 Gil DelamareLéon (uncredited) | Léon (uncredited) |
 Guy Henry(uncredited) | (uncredited) |