"As a child, she committed unforgivable acts to free Grace Loray from King Elazar of Argrid. Now Elazar's plan to retake the island has surpassed Lu's darkest fears: he's holding her and his son Ben captive in an endlessly shifting prison, forcing them to make a weapon that will guarantee Elazar's success. Escape is impossible--unless Lu becomes the ruthless soldier she hoped never to be again. Vex failed to save Lu and Ben--and that torments him as much as his Shaking Sickness. With the disease worsening, Vex throws himself into the rebellion against Argrid"--Publisher marketing.