In the thirties, a Chasseur Alpin commander is accused of spying and sentenced to death. At the last minute, he is saved from the firing squad by a female spy's confession.
| Actor | Role |
|---|---|
 René DaryLieutenant Jean Varin | Lieutenant Jean Varin |
 Colette DarfeuilThe spy Jane Simon | The spy Jane Simon |
| AAbel JacquinCommander of the fort | Commander of the fort |
 Raymond AimosWarrant Officer Brochard | Warrant Officer Brochard |
 Camille BertNot listed | Not listed |
 Henri BoscNot listed | Not listed |
| RRobert DidryNot listed | Not listed |
| PPhilippe JanvierNot listed | Not listed |
 Jean MarconiNot listed | Not listed |
 Yvonne RozilleNot listed | Not listed |