The four female leads—Blanche Akermann (Julie de Bona), Eugénie Berthier (Sofia Essaïdi, a bourgeois woman married to a factory worker), Giulia Vincent (Nolwenn Leroy), and Léonie Morel (Constance Gay)—represent different classes and drive the plot through personal entanglements, family secrets, and the investigation, framed as a 'chronique féminine' by creators Marie Deshaires and Catherine Touzet. This setup highlights class clash and women's varied social positions organically tied to the era's events rather than modern activism.

Casting features a strong ensemble of established French actresses without source-material alterations or forced diversity mandates. No creator statements emphasize contemporary DEI, identity politics, or norm-challenging; the narrative uses the historical backdrop of social reform for drama and mystery. Reception describes it as a period thriller with class tensions and female perspectives, showing no notable backlash or politicized framing beyond the 1930s context.