Josie Barton is a high school student living in terror. Invisible creatures torment her everywhere she goes, constantly getting her into trouble at school, and even haunting her apartment. Zeph Clemmont is a changeling with enemies in all the worst places, fighting to undo a curse that threatens to end his life. Survival means he will have to swallow his pride and trust Josie with all his darkest secrets. With the help of a gunslinging shaman and the enigmatic Prince of Nightmares, Zeph and Josie are only a heartbeat away from defeating one of the most diabolical faerie villains their world has ever known.