It's a really good book and I love this series about Nate McBride, but I think this time Peterson stretches his characters professionality a little bit too far. There's less struggle in their decisions and more coolness, everything is explained with their experience and nothing with their personality. The previous books better captured that.
Nathan McBride is a super hero and politically definitely not correct in the first 3 sequels... but now he has turned into a mother Theresa of sorts. Uttercrubbish with a story so ridicolous that it hurts. My recommendation: skip this one.