Marthe Richard's work as a spy is forgotten today in France and she's mainly remembered for a famous law which closed the brothels after WW2;Marthe was a former prostitute herself.
Raymond Bernard's work has not worn well and ,if it weren't for Erich Von Stroheim and Edwige Feuillère,it would have sunk into oblivion .There's in this undistinguished flick one good scene : when Feuillère is pretending she's going to kill Von Stroheim.Spy Mata -Hari is also featured ,and a brief scene shows her execution.
Word to the wise:you'd better choose other Bernard movies:"Les Croix de Bois" ,of course ,but also "Les Miserables" the best French version of the famous novel,and the overlooked "Un Ami Viendra Ce Soir".