I won't try to add anything to deep and meaningful to what many others have already written about this series. I will say that the book was a page-turner and a good read...and that I finished it in a day and a half...the first soaking up spring sunshine and the next curled up on the couch in a more typical Washington-rainy-day-weather pose.
Biggest concern: how the book was marketed to kids...and it is all moral relativism. No definite rights or wrongs, just big patches of gray. These are hard enough areas to conquer as an adult; and to be frank, the youth of today, without the responsibility and critical thinking skills gained with maturity, usually lack the depth to be able to navigate these issues.