The scene of action embraces Tangier, Toulon and the Mediterranean, where Pierre Fresnay, Rolf Wanka and Kim Peacock, cast as captains of French, German and English boats, respectively, unite to rescue the passengers of a neutral boat that is about to be engulfed in a cloud of poison smoke released by a smuggling ship.
| Directing | Léo Joannon | Director |
| Camera | Marcel Lucien | Director of Photography |
| Writing | T.H. Robert | Screenplay |
| Sound | Michel Michelet | Original Music Composer |
| Art | Robert Gys | Art Direction |
| Writing | Roger Vitrac | Dialogue |
| Editing | Louis Devaivre | Editor |
| Costume & Make-Up | Hagop Arakelian | Makeup Artist |
| Writing | Léo Joannon | Story |