The Cleaner by Mark Dawson is part of the John Milton series by this very talented author. The author is new to me and he is to be commended for writing, in my opinion, a very good thriller. In my opinion, the storyline line was interesting and intriguing, gripping and I was on the edge of my seat until the very end. In my opinion, the author did an outstanding job in developing and creating the characters who were perfectly developed for this novel. John Milton was burned out on his job and struggling to reconcile and live with the horrific things he’s had to do to get the job done all while trying to help a woman save her son from a street gang as John is fighting for his own life against his government employer who now wants him dead. This novel makes me want to read all of the books in the John Milton series. I received an uncorrected copy of this novel and these opinions are solely my own. I rated it a four.