A bank guard disappears from the elevator between the ground floor and the first floor. He was carrying a briefcase containing valuable documents. Tortoran, a young journalist, is responsible for following the case and unmask the ingenious acrobat who is the author.
| Actor | Role |
|---|---|
 Jacques VarennesAlfred Tortoran | Alfred Tortoran |
 Jeannie LuxeuilLucette Gardenois | Lucette Gardenois |
| CClaude EllerOlga | Olga |
 Robert OzanneRené Lambert | René Lambert |
| OOrbanGrascuit | Grascuit |
| YYvonne ArmorElvire, the gypsy | Elvire, the gypsy |
 Pierre LarqueyMichaud, the secretary | Michaud, the secretary |
| AArielleMicheline | Micheline |