Cassie Harris turned her back on her best friend Laney Blake. She had no other choice, Laney had run away and was one of them now, a creature of the trees. As the year wore on, the woods grew quiet, snow blanketed the ground, and the murderous beings that had taunted her drifted away with the fallen leaves.
Only one monster remained. Aidan hadn’t left with the rest. Cassie's terrifying stalker lingered, sending her chilling reminders of his interest. He haunted her home, her school, her bedroom; and she knew he wouldn’t stop until he could find a way to lure Cassie into the forest to become one with him forever. She must now decide between ignoring Aidan’s escalating advances in the hope of him eventually losing interest, or confronting him and risking the return of the deadly band of monsters, the creatures of the trees.
The faery queen has forbidden Aidan from stalking his prey, but Cassie should have known that nothing would keep him from what he wants: to steal her away forever into the realm of the Fae.
Cassie struggles to pick up what's left of her life, keeping true to her promise to watch over her best friend's son. But despite the faery queen's promise of safety, the shadow of Aidan is ever present in her mind, haunting her dreams and turning forest shadows into nightmares.
Although her queen wants the Fae to leave the forest, Laney can't tear herself away from her son's side. While her baby is safe in the arms of his adoptive parents--with Cassie to watch over him from afar--it wasn't enough for the new faery. The thought of leaving her son is unbearable, even if she knows leaving is the only way to keep her best friend safe from Aidan's grasp.
When the faery queen's threat of departure becomes all too real, Aidan takes matters into his own hands, throwing the Fae into a battle that risks their very existence. His action impels Laney to choose which side she really belongs on--human or faery--and forces Cassie to decide just who she can trust, at last, with the truth.