Then she meets Henry. Dark. Tortured. And mesmerizing. He claims to be Hades, god of the Underworld—and if she accepts his bargain, he'll keep her mother alive while Kate tries to pass seven tests.

Kate is sure he's crazy—until she sees him bring a girl back from the dead. Now saving her mother seems crazily possible. If she succeeds, she'll become Henry's future bride, and a goddess.