After scientist Sylvie discovers her brother Paul trying to steal a gun from her lab, he explains that he wishes to avenge the death of their father whom he suspects died at the hands of his business partner.
You can now watch Secret Defense online on the following streaming providers in the United States.
| Writing | Jacques Rivette | Scenario Writer |
| Directing | Jacques Rivette | Director |
| Writing | Pascal Bonitzer | Scenario Writer |
| Writing | Emmanuelle Cuau | Scenario Writer |
| Writing | Emmanuelle Cuau | Writer |
| Writing | Jacques Rivette | Writer |
| Writing | Pascal Bonitzer | Writer |
| Camera | William Lubtchansky | Director of Photography |
| Editing | Nicole Lubtchansky | Editor |
| Costume & Make-Up | Anne Autran | Costume Design |
| Production | Maurice Tinchant | Producer |
| Art | Emmanuel de Chauvigny | Production Design |
| Production | Martine Marignac | Producer |
