Valuable documents have been stolen from a British laboratory. Slim Callaghan is sent to investigate the theft. But his tracks soon lead him to the welcoming skies of the Côte d'Azur. There, he decides to infiltrate a network of aristocratic spies.
| Directing | Willy Rozier | Director |
| Writing | Peter Cheyney | Writer |
| Writing | Willy Rozier | Writer |
| Writing | Jacques Vilfrid | Writer |