I don't want to spend too much time writing this review, because I'm so anxious to start the next book in this series. This is a fascinating study in human nature. I particularly like how the author has introduced us to TWO characters living under similar circumstances, then given them both the same supernatural "opportunity". These are beautifully flawed characters that ultimately head in very different directions...and exciting conflict ensues. I was fascinated by my own response to it - how I could relate to both characters along the way, agreeing with their actions at times, disagreeing at others. I could see their immaturity, so it made it easier to forgive poor choices, but by the end of the book you see what each little decision and mis-step has created and it really gives you pause. It's a fast, easy, fast-paced, addicting read, but - warning - it isn't meant to stand alone. It ends abruptly with a perfect set-up for the next in the series, Dark Horizons. Also, be advised there is some foul language, but nothing I was distracted by - it seemed a natural, realistic usage for the teen characters. There is some violence (mildly to moderately gory in description), and rape (not graphically described). In the beginning I hoped that mistakes/poor decisions made by our beloved main characters wouldn't lead to anything that "couldn't be apologized for". I was disappointed, at first, when things clearly got violently out of hand. I quickly realized, however, that that's the reality of life, the reality of human nature. "I'm sorry" won't always be enough...as I'm sure our character Nathan will learn (or, at least, I HOPE he will learn). He was responding to the intoxicating power of something supernatural, but what about in the "real world" when these kids are responding to the power of freedom? The power of superior physical strength? The power of social standing? We saw, in the beginning of the book, how other characters had responded to that power - by bullying. Nathan, unfortunately, makes the same ultimate choice. We also see that hiding from our power, or ignoring it, can be - arguably - just as destructive or damaging. While Nathan has some serious lessons to learn, so does Lexi. Please excuse me while I run off to see what happens next!