I've read the first four books so far (as I haven't been able to find the last three books in my library yet), and for me, this series was a great surprise! I had been willing to read the Tomorrow series for years, but somehow I never really got to the point where I would buy and eventually read them.
Till last year! And I may say that I thought it to be the best series I've read that year! This second book, I thought it to be thrilling, and I love the fact that (even though the things that happen are terrible) the story is original and full of suspense!
I would recommend this book to a lot of people, but please read the first book first!