Ryia Cautella, a.k.a. the Butcher of Carrowwick, and her motley crew have succeeded in the ultimate heist . . . with the most dire possible consequences. A terrifyingly powerful tool has fallen into the hands of Callum Clem, the criminal leader of the Saints, who was already one of the most dangerous men alive. With the newfound ability to force magic-wielding Adepts to his will, he is unstoppable.