In Marseilles, the fisherman Tonin closely monitors the actions of the wreckage workers led by a certain Mr. Léon. Could these bizarre individuals have something to do with the double murder at the Grand Hotel?
| Actor | Role |
|---|---|
 Henri AlibertTonin | Tonin |
 Édouard Delmontle Marsouin | le Marsouin |
 Noël RoquevertM. Léon | M. Léon |
| MMireille BardNine | Nine |
| JJacqueline RomanRégine | Régine |
 Léon BelièresBaptiste | Baptiste |
 Pierre PalauLouiset | Louiset |
 Manuel GaryJustin | Justin |
| PPerchikBébert | Bébert |
 FransinedNot listed | Not listed |
 Guido CelanoNot listed | Not listed |
| GGary GarlandNot listed | Not listed |
| MMaxime LéryNot listed | Not listed |
| AAlexandre FabryNot listed | Not listed |
| DDelhormeNot listed | Not listed |
 Fernand Flament(uncredited) | (uncredited) |
| AAlfred Goulin(uncredited) | (uncredited) |
| AArmand Larcher(uncredited) | (uncredited) |
 Lilia Vetti(uncredited) | (uncredited) |