This is a really enjoyable book. The pages seem to fly by. I know it was a good book because as soon as I finished it I cannot wait for the next book to come out.
Since the last book all is going well for the Grades. They are hiding out in 9's huge luxury Penthouse, complete with its own Danger room (Lecture hall) used for training. They have met up and even managed to re-join with Sam. John has started to accept the leadership role expected of him. Nine is his General, specialising in battle strategy and training. 6 is a warrior. Marina is the team medic. 8 is part jester part team conscience. Sam and Sarah are learning to be better soldiers. I must say Sam continues to impress me as the series progress. Even Elle discovers part of her origin. With everything going right for them you know something has to go wrong.
We learn a little more about the Mogs and Lorien as well. Especially from the extracts of the back lost files. The Lorien's seem to be more technologically advanced versions of humans, yet for all their advancements there society works the same as ours. We meet Adam for the first time and learn a little more about him again in the extracts at the end of the book.
There is a lot more swearing and cursing in this book, which could be a by-product of being around 9 all the time in his penthouse, or they have realised they are solders and the harsher language is in keeping with harsher times. One thing I did not like about the book was in the other books they always talked about how strong the Grades were, the super strength seems to be forgotten in this book. All in all a good enjoyable book.