Harper’s (Boitano’s Edge
) polished debut novel couches an unexpectedly poignant meditation on loss in a quick-moving plot about ghosts and the spiritual mediums who communicate with them. Fifteen-year-old Sparrow Delaney is the seventh daughter of a seventh daughter and therefore highly gifted in the psychic arts. The only problem: she wants nothing to do with her talent. She trains herself to ignore the ghosts that compete for her attention, at least in the presence of her family and fellow citizens of Lily Dale, N.Y., a (real-life) town that attracts tourists with its famous spiritualists and Spirit meetings. But how can Sparrow shake off the teenage ghost who refuses to stop haunting her unless she helps him, and what does he have to do with the cute boy in the new school she’s transferred to in hopes of escaping the Lily Dale weirdness? A steady stream of wit refreshes familiar-seeming story elements. Harper serves up pitch-perfect dialogue from high school athletes and teachers; squabbling mediums; and such clever flourishes as the grandfatherly baker, the 19th-century young Indian gentleman and the exacting female professor who serve as Sparrow’s spirit guides. Surprise turns add to the plot’s pleasures, but what makes this book stand out most is Harper’s attention to the pockets of sorrow in her characters’ histories, each of them handled with care. For all of the imagination the author displays in inventing a spirit world, she shows equal skill in probing the nuances of tender emotions, too. Ages 12-up. (July)