This book, unfortunately, was among the other disappointing sequels to amazing first books. The beginning started out good. It was intriguing and a bit gory, with bodies hanging from the ceiling and flesh eating metal balls. But i felt after a while the book starting to drag and my head starting to droop. Seriously, it got very boring. Thomas began to grate on my nerves and overall the plot was slowing down. The end was the reason i gave the book 3 stars instead of 1. the battle was very similar to that with the greivers but different enough to keep me reading. I will read the second one, maybe, if i can get around to it.