The Paladines write crime novels together. In a cinema, they happen to see a report on the consequences of a shipwreck in which Lieutenant Dupuis tells about the death of an old man in the lifeboat carrying the survivors. Husband and wife agree that this could be the starting point of a new story and go and see Dupuis to get more details about the drama. When they come to his hotel Dupuis is dead with a bullet in his head. Police characterizes the death as suicide but Paladine has found a train ticket in the dead man's pocket. With his wife he takes the train to the specified destination, somewhere in the provinces...
| Actor | Role |
|---|---|
 René DaryMr. Paladine | Mr. Paladine |
 Jacqueline GauthierMrs. Paladine | Mrs. Paladine |
 Louis SalouMr. Delaunay | Mr. Delaunay |
| AAline CarolaHélène de Chanceau | Hélène de Chanceau |
 Georges GreyAlain | Alain |
| RRoger ChampiFirmin | Firmin |
 Jean MeyerNotary's nephew | Notary's nephew |
 Jean DaurandAcrobat | Acrobat |
 Colette RégisMrs. de Chanceau | Mrs. de Chanceau |
 André CarnègeInvestigating judge | Investigating judge |
 Pierre PalauNotary | Notary |
| MMaurice PierratMaître d'hôtel | Maître d'hôtel |
 Charles LemontierCook | Cook |
 Jean MorelCommander Dupuis | Commander Dupuis |
 Gabrielle FontanInnkeeper | Innkeeper |
| EEugène FrouhinsGardener | Gardener |
| GGeorges VastyInspector | Inspector |
| RRobert ArpinShip's boy | Ship's boy |
| Georges GreyAlain Severac | Alain Severac |
| CChampiFirmin (uncredited) | Firmin (uncredited) |
| HHélène de VerneuilLady at the spectacle (uncredited) | Lady at the spectacle (uncredited) |
| JJacques Dubuis(uncredited) | (uncredited) |
 Maxime FabertDrunk (uncredited) | Drunk (uncredited) |
 Julienne Paroli(uncredited) | (uncredited) |
| PPierre Réal(uncredited) | (uncredited) |