A writer gets wrapped up in espionage.
| Production | Nello Meniconi | Co-Producer |
| Directing | Édouard Molinaro | Director |
| Writing | Édouard Molinaro | Screenplay |
| Writing | Jacques Robert | Novel |
| Production | Alain Poiré | Producer |
| Production | Luciano Perugia | Co-Producer |
| Camera | Raymond Lemoigne | Director of Photography |
| Sound | José Berghmans | Original Music Composer |
| Production | Jean Le Duc | Co-Producer |
| Editing | Robert Isnardon | Editor |
| Art | Robert Clavel | Art Direction |
| Art | Olivier Girard | Art Direction |
| Costume & Make-Up | Jacques Martin | Costume Design |
| Costume & Make-Up | Louis Bonnemaison | Makeup Artist |
| Production | Irénée Leriche | Production Manager |
| Production | Armand Tabuteau | Unit Production Manager |
| Directing | Philippe Monnier | Assistant Director |
| Directing | Klaus Müller-Laue | Assistant Director |
| Sound | Jean Labussière | Sound |
| Camera | Jean Benezech | Camera Operator |
| Camera | Jean Baudoin | Still Photographer |
