There, her life begins again as she meets Naomie’s brother, the brilliant, mad alchemist Fulcanelli and his mysterious apprentice Lucien. Penelope falls headlong into the esoteric world of alchemy, espionage, and love. Assigned to spy on the clients of a powerful, French brothel, she listens, learns, and dances to seduce one of the most infamous murderers of World War II in a desperate calculation to save her lover Lucien.