This book was pretty good. The first 25% was a little slow, but after that it was fine. It was somewhat predictable at times and the story wasn't exactly new, but I enjoyed it anyway.
Even though it's a rather short book, Luke - the main character - went through a development. I liked him a lot towards the ending. I didn't like his parentes too much through and I wondered about Jen's mom since she didn't make an apperance in the book.
It felt a little like this wasn't a complete book and that maybe all seven books in the series should've been just one book.