Divergent (Divergent, Book 1)

For sixteen-year-old Tris, the world changes in a heartbeat when she is forced to make a terrible choice. Turning her back on her family, Tris ventures out, alone, determined to find out where she truly belongs. Shocked by the brutality of her new life, Tris can trust no one. And yet she is drawn to a boy who seems to both threaten and protect her. The hardest choices may yet lie ahead….