The Replacement by Brenna Yovanoff
Release date: September 16, 2010
Synopsis from Goodreads:
Mackie Doyle seems like everyone else in the perfect little town of Gentry, but he is living with a fatal secret - he is a Replacement, left in the crib of a human baby sixteen years ago. Now the creatures under the hill want him back, and Mackie must decide where he really belongs and what he really wants.
A month ago, Mackie might have told them to buzz off. But now, with a budding relationship with tough, wounded, beautiful Tate, Mackie has too much to lose. Will love finally make him worthy of the human world?
This book looks amazing. I cannot wait to get my grubby hands on it! The cover, in my opinion, is brilliant. One of the best YA covers I've seen in a long time.