A criminal making plans to pull off one big score before he retires, comes into possession of secret papers worth a fortune, but dies while attempting the hit. His wife takes those papers for herself, while discovering there are rival criminals, a powerful organization and a sleazy blackmailer.
| Directing | Umberto Scarpelli | Director |
| Directing | Michel Clément | Director |
| Writing | Jean Bruce | Novel |
| Writing | Michel Clément | Writer |
| Writing | Daniel Boulanger | Writer |
| Writing | Daniel Boulanger | Dialogue |
| Camera | Pierre Montazel | Director of Photography |