A young woman has doubts about her husband's fidelity. She pretends a trip, but settles in a hotel where her husband must pass. He meets her and, disturbed by the one he believes to be his wife's double, becomes her lover. Little by little the truth breaks through. The husband takes leave of the mistress and returns to the wife whose return has been announced.
| Actor | Role |
|---|---|
 Pierre FresnayFrançois Laferrière | François Laferrière |
 Yvonne PrintempsElisabeth Laferrière | Elisabeth Laferrière |
 Luce FabioleLa tante Ellen | La tante Ellen |
 Bernard BlierRobert Nattier | Robert Nattier |
 Jean MeyerArmand | Armand |
 Paulette DubostLa standardiste | La standardiste |
 Denise BenoitIrma | Irma |
 Jacques LouvignyLe commissaire | Le commissaire |
 Pierre PalauLe contrôleur | Le contrôleur |
 André ValmyLe gérant de l'hôtel | Le gérant de l'hôtel |
 Guita KarenMadeleine | Madeleine |
| AAndré VarennesLe général | Le général |
 Robert Le FortLe violoniste | Le violoniste |
 Annette PoivreLa postière | La postière |
| HHenry PrestatLe veilleur de nuit | Le veilleur de nuit |
| HHenri de LivryLe portier | Le portier |
| JJacques JanvierNot listed | Not listed |
 Liliane Bert(uncredited) | (uncredited) |
| MMaggy Claude(uncredited) | (uncredited) |
| PPaul DelauzacLe maître d'hôtel (uncredited) | Le maître d'hôtel (uncredited) |
| SSimone Gerbier(uncredited) | (uncredited) |
| JJacques Munier(uncredited) | (uncredited) |
| AAnne Vandène(uncredited) | (uncredited) |