A mysterious cult is sacrificing beautiful young women to a demonic force that has promised them the kingdom of France in return for the blood of their victims. Only one man can save Paris from chaos and terror—the Chevalier d’Eon!
Madame de Pompadour is being held hostage by twin poets, Emma and Ange. King Louis has ordered D'eon to rescue Madame before sunrise, but there's not much time left! Will D'eon be able to assume the form of the Chevalier while still keeping Lia and the murderous poets' existence a secret from the Madame?