A second Monster War is on the horizon and Kierse is struggling to return as a major player. With both control of her new magic and the ceaseless bond between her and Lorcan sidelining her, she is determined to find a way to help. Kierse and Graves seek to steal the Stone of Fal, an ancient Celtic artifact that they believe can break bonds. In the pursuit of her freedom, the hunter becomes the prey as Kierse's parents' killer, the dreaded Fae Killer, lands on her trail. The future itself hangs in the balance if Kierse and Graves can't bring all the artifacts together in the hopes of defeating their enemies.