For the first half of the book I wasn't too sure if I liked it. I have an irrationnal fear of zombies so I was afraid it would end up with some and I didn't want to read that... But it was okay :) no zombies! 
 I found the book to be quite a light read even with the hard subjects. I almost always guessed correctly what would happen next and wasn't suprised at anything (I might have read to many YA books...) 
 I didn't like the ending though. I know there are other books but too many questions are left unanswered in the end... Therefore, I will read book 2. I want to know more about Evan and Ringer...