Fantastic! This book is intense and so interesting. It is very psychological and reminds me a lot of Ender's Game. I can't tell you why, because I worry that I'd be spoiling things for you. Let's just say, you will be engrossed through the entire book. It also ends on the mother of all cliffhangers. I plan on recommending this book to anyone who asks me for a recommendation. I can't wait for the sequel.