Sixteen-year-old Gia Kearns would rather spar with boys than kiss them. That is, until Arik, a leather-clad hottie in the Boston Athenaeum, busts her staring at him while she’s with her friends researching for their summer essays.
When he suddenly disappears, Gia swipes the book he abandoned and unwittingly speaks the key that sucks her and her friends into a gateway book linking the world’s libraries, where hidden behind bookcases lies a magical world and a rising evil that will alter both the Mystik and human realms, returning them to a time when frightening creatures openly roamed the earth and fed on humans.
Jumping into some of the world’s most beautiful libraries would be a dream come true for Gia, if she weren’t struggling to fit into her new life as a Sentinel—magical knights charged with protecting humans from the creatures traveling across the gateway books—or busy resisting forbidden love. But as the threat from an exiled wizard seeking revenge rises, Gia must choose between her heart and her head, between Arik’s world and her own, before both are destroyed.