What price is too high to pay, even for love? Jace is now a servant of evil, bound for all eternity to Sebastian. Only a small band of Shadowhunters believe he can be saved. To do this, they must defy the Clave. And they must act without Clary. For Clary is playing a dangerous game utterly alone. The price of losing is not just her own life, but Jace s soul. Clary is willing to do anything for Jace, but can she still trust him? Or is he truly lost?