I really did enjoy this book. Although the first 3/4 of the book were far better than the end, which is why I took away a star. At the end of this book, I felt similar to how I felt at the end of Dan Brown's Angels and Demons - it all of a sudden got very complex, very detailed and it sort of jumped the shark. That being said, this book was a great read. I was into it from Page 1, and did not put it down until I finished. Although I thought there were some unnecessary plot lines thrown in, they didn't take away too much from the overall thrill of the book. I would suggest this to a friend.