From the moment Sylvie and Andrée meet in their Parisian day school, they see in each other an accomplice with whom to confront the mysteries of girlhood. For the next ten years, the two are the closest of friends and confidantes as they explore life in a post-World War One France, and as Andrée becomes increasingly reckless and rebellious, edging closer to peril. Sylvie, insightful and observant, sees a France of clashing ideals and religious hypocrisy—and...