by Molly Tanzer
In the waning days of World War II, tucked into the sleepy Cumbrian countryside in the north of England, lies the Library: the repository of all occult knowledge for the Société des Éclairées, an international organization of diabolists. There, with a victory for the Allies hanging in the balance, best friends Jane Blackwood and Miriam Cantor begin to contemplate their futures as diabolists. But when Miriam learns her missing parents are suspected of betraying the Société to the Nazis, she embarks upon a desperate, dangerous gambit to clear their names. Meanwhile Jane, fearing her life might be at stake, embraces a forbidden use of the Art that puts everyone she loves in danger. As their friendship buckles under the stress of too many secrets, Jane and Miriam will come face to face with unexpected truths that change everything they know about the war, the world, and most of all themselves. After all, some choices cannot be unmade—and a sacrifice done with the most noble of intentions might end up creating a monster.