FBI profiler Cassandra Liddell discovers that a dark force is awakening inside her essence—one she isn’t sure she can control. In the fairy world, a civil war is underway, and the fairy king wants to kill her. She joins the rebels to take revenge for what was done to her, but her power frightens both enemies and friends. To find her revenge, she must learn to control her new magic—and also seize an ancient artifact that will allow her to command the fairy consciousness.