Blood and Feathers

Sine is the spare, not the heir, to her father's kingdom near the lands of wild magic. Her family guards the wall that keeps the monsters out.
Rigby was born on the other side of the wall, one of the monsters who wears a human face.
Sine will do anything to keep the wall up and protect her people. Rigby will do anything to tear the wall down and break the bonds that hold his people back, no matter who he must betray...or sacrifice.
In this epic fantasy novel by NY Times bestselling author Beth Revis, the bonds of family, friendship, and love are tested as the truth of magic--and the price paid for it--is discovered after generations of deceit.