An industrial espionage group calls on a retired spy living with his wife and children in Paris.
| Production | Robert Dorfmann | Producer |
| Directing | René Clément | Director |
| Production | Bertrand Javal | Producer |
| Art | Jean André | Art Direction |
| Writing | Arthur Cavanaugh | Novel |
| Production | Georges Casati | Executive Producer |
| Writing | Daniel Boulanger | Adaptation |
| Camera | Andréas Winding | Director of Photography |
| Editing | Christiane Lack | Editor |
| Camera | Alain Pillet | Second Assistant Camera |
| Writing | René Clément | Adaptation |
| Art | Robert André | Set Decoration |
| Art | Eric Simon | Set Dresser |
| Production | Roger H. Lewis | Associate Producer |
| Art | Marc Desages | Set Decoration |
| Sound | Joseph de Bretagne | Sound Engineer |
| Editing | Françoise Javet | Editor |
| Art | Georges Glon | Set Decoration |
| Camera | Roger Corbeau | Still Photographer |
| Camera | Jean Harnois | First Assistant Camera |
| Directing | Denis Amar | First Assistant Director |
| Sound | Maurice Dagonneau | Boom Operator |
| Writing | Eleanor Perry | Scenario Writer |
| Costume & Make-Up | Simone Knapp | Hairstylist |
| Production | Daniel Deschamps | Unit Manager |
| Directing | Patrick Bureau | First Assistant Director |
| Camera | Georges Pastier | Camera Operator |
| Writing | Sidney Buchman | Scenario Writer |
| Production | Alain Belmondo | Unit Manager |
| Production | Sidney Buchman | Associate Producer |
| Production | Ennio Nobili | Co-Producer |
| Costume & Make-Up | Aïda Carange | Makeup Artist |
| Production | Charles Chieusse | Location Manager |
| Costume & Make-Up | Yvette Bonnay | Assistant Costume Designer |
| Production | Georges Caroujat | Production Accountant |
| Costume & Make-Up | Tanine Autré | Wardrobe Master |
| Costume & Make-Up | Roxane Vaisborg | Assistant Costume Designer |
| Editing | Jean Ravel | Editor |
| Sound | Gilbert Bécaud | Original Music Composer |
| Crew | Ring Lardner, Jr. | Additional Writing |
