Inspired by the real-life Louise de Bettignies (aka Alice DuBois, aka Lili), this novel fictionalizes one of the women behind this famous titular group of spies in German-occupied Europe during the first World War, and brings her back to post-World War II France in search of one missing person, as well as resolutions to questions unanswered for nearly 30 years. Read more about this book in my review here. https://tcl-bookreviews.com/2017/11/25/unraveling-the-complexes/