There's never a dull moment at the Hôtel du Libre Echange. Deceptions, hitches and other misunderstandings make a few people mingle whereas, for their own sake, they should not. An example among others: an expert who has come to the hotel for professional reasons had better not meet his wife, who is there to cheat on him with his best friend.
| Actor | Role |
|---|---|
 FernandelBoulot, le garçon d'étage | Boulot, le garçon d'étage |
 Raymond CordyBastien | Bastien |
 Saturnin FabreM. Mathieu | M. Mathieu |
| MMarion DelboAngélique Pinglet | Angélique Pinglet |
 Pierre LarqueyM. Pinglet | M. Pinglet |
 Ginette LeclercVictoire | Victoire |
 Raymond BussièresBob | Bob |
| OOlga MurielPâquerette | Pâquerette |
 André AlermeM. Paillardin | M. Paillardin |
 Pierre PalauLe commissaire Boucard | Le commissaire Boucard |
 Anthony GildèsL'employé du commissaire | L'employé du commissaire |
 Jacques BruniusLe monsieur du train | Le monsieur du train |
| SSimone DulacLa dame du train | La dame du train |
 Paul GrimaultNot listed | Not listed |