*"This utterly original novel expertly blends profound supernatural terror, swashbuckling action, honest human emotion, brutal violence, and blunt good humor. The smartest, scariest, and most surprising book I've read in ages."* *—Pinckney Benedict* The Black Palace—some have called it a hidden fortress, others a labyrinth of myth, a trackless mystery. And even the witches, who built it and keep it shut, fear that through the ages it has come alive. But tonight, a sleek field agent in the Witchfinders Union, DiFranco, leads her supernatural SWAT team on a raid inside to find one of their own, bringing along a witch’s young maidservant as their prisoner-guide. Yet once across that uncanny threshold, they must confront another world of grand secrets, where strange destinies are woven with theirs, where other desires are at work. They soon learn that you don’t get into the Black Palace unless it wants you in, and the same goes for getting out.