Tanya is no ordinary girl. . . . She can see fairies. But not the fairies we imagine. Evil fairies who cast spells on her, rousing her from her sleep and propelling her out of bed. At wit's end with her daughter's unusual behavior, Tanya's mother sends her to Elvesden Manor, her grandmother's secluded countryside estate. Fifty years ago a girl vanished in the woods surrounding the mansion, and as Tanya learns more about the mystery, she finds herself dangerously close to vanishing into the fairy realm forever.