"As the chaos of the Sundering rages around her, young warlock Farideh faces a more personal turmoil wrought by a deal she made with a devil years ago. Hoping to protect her twin sister, she leaves everything she holds dear to assist a wizard in a scheme that pits the devils of the Nine Hells against the gods above. But when Farideh casts the spell to enter the wizard's remote mountaintop fortress, she picks up a stowaway--a Harper agent named Dahl who isn't so inclined to follow devilish demands"-- Provided by publisher.