I never really liked Paul but he was an interesting character. I was hoping for more development in this book, but it fell flat. We were told what happens to Paul when he was in high school but we weren't given enough time to feel his pain. Everything got back to the present day and worked itself out far too quickly. I'm glad I understand him more and it was fun seeing Sebastian, Brad, and Toby again but other than that it I had very little connection to Paul or even Trevor for that matter.
Also, the humor was toned down a lot in this book and that's what I absolutely love the most in Tenino's books.