Every adult suddenly goes nuts and starts killing their kids in what reads like a post-apocalyptic zombie novel minus the zombies. Good stuff, right? I thought so until around page 300 where we are introduced to a ludicrous theory on why this madness is occurring. I would have preferred no explanation to the one that was given. That killed the book for me. 2o pages of idiocy tanked this from four stars to two and I couldn't enjoy the rest after that. Bummer.