A Turkish ambassador arrives in Paris to sign an important trade agreement, allowing Turkey to buy a sophisticated new war plane from France. Immediately he is the target of an assassin, and a special agent is assigned to protect him.
| Directing | Claude Chabrol | Director |
| Writing | Roger Hanin | Writer |
| Writing | Jean Halain | Adaptation |
| Camera | Jean Rabier | Director of Photography |
| Sound | Pierre Jansen | Music |
| Production | Christine Gouze-Rénal | Producer |
| Production | Virgilio De Blasi | Associate Producer |
| Editing | Jacques Gaillard | Editor |
| Costume & Make-Up | Jacques Heim | Costume Design |
| Sound | Jean-Claude Marchetti | Sound |