In 1917, in a small village in the North, Abbe Gaillard is suspected by the Germans of facilitating the escape of French and Belgian soldiers. A false alibi makes him innocent and he can thus continue his mission, thanks to the devotion of an Alsatian who, in enemy uniform, obscurely serves his country.
| Actor | Role |
|---|---|
 Gabriel GabrioHeim | Heim |
 Léon MathotAbbé Gaillard | Abbé Gaillard |
 Junie AstorMadame Lecoeur | Madame Lecoeur |
 Jean-MaxLieutenant Kompartz | Lieutenant Kompartz |
| PPaul AzaïsStiefel | Stiefel |
| HHélène PépéeLa petite femme | La petite femme |
 Henry RousselLe général allemand | Le général allemand |
 Roger LegrisLe balayeur Airvault | Le balayeur Airvault |
 Guillaume de SaxLe colonel von Niederstoff | Le colonel von Niederstoff |
 Lucien DalsaceLe lieutenant Schmitt | Le lieutenant Schmitt |
 Maurice LagrenéeL'ordonnance | L'ordonnance |
 André MarnayL'aumônier général | L'aumônier général |
 Anthony GildèsLe greffier | Le greffier |
 Robert DalbanUn officier allemand | Un officier allemand |
 Georges DoukingNot listed | Not listed |
| TTeddy MichaudNot listed | Not listed |
 Jane PiersonNot listed | Not listed |