I absolutely loved the first book in this series. The original premise, the whole coolness of it all were so great I really was waiting for this novel to come out. I got a little bit worried reading it as it seemed to go to a definite end. Would it be only two books? That couldn't be the case! Come on, it's going to be a movie I read! Or would the direction change so much I wouldn't enjoy it as much anymore? Wrong! I won't spoil things, but the ending WILL make you eager to read the third book and only takes the idea of the first books to an even stronger direction.
Like the first novel ex-con Nick Mason has to do a mission for the man who got him out of jail, Darius Cole. This time he has to kill some enemies of Cole who are in the witness protection program. There's some very strong action scenes that take place because of this mission sometimes taking this novel even beyond Lee Child / Jack Reacher territory. It's not all shooting and car chases, though! We get into Nick's relationship with his ex-wife and daughter, with the woman he is sharing a house with and his own conscience.
It's full of twists and turns, it's very dark and it's very action-packed. Reacher meets Parker I would say. You simply need to read this series.