A French resistance group frees twelve captured soldiers from a German prison camp, but apparently there is an additional prisoner among them who is suspected of being an enemy spy.
| Writing | Costa-Gavras | Writer |
| Directing | Costa-Gavras | Director |
| Writing | Daniel Boulanger | Dialogue |
| Writing | Jean-Pierre Chabrol | Novel |
| Editing | Christian Gaudin | Editor |
| Sound | Michel Magne | Original Music Composer |
| Camera | Jean Tournier | Camera Operator |