Don't even think of reading this book if you don't like being left at a cliffhanger -- the one here is a doozy.
In the course of this lengthy, complex, suspenseful, and emotional novel, the first in a proposed series called Chaos Walking, the author raises many issues for discussion, among them gender roles and relations, the place of killing in our society, religion, utopianism, what growing up really means, and (in an allegorical way) the cost of our information-saturated culture. He also includes possibly the best talking-dog character in all of literature, a dog who talks just exactly the way you'd imagine a dog would, to endearing and devastating effect.
Up until the cliffhanger, the suspense has ratcheted up and up, as has the graphic violence -- if they make a movie version of this, it will surely earn an R rating. Though too violent for younger readers, for mature teens this is a first-rate, thought-provoking, fast-moving thriller.