Hiding out from a Russian crime lord who wants to kill him, Court Gentry - the Gray Man - goes on the run to the Amazon. Alas, he gets involved with a brutal cartel leader - assassins to the left of him, murderous cartel members to the right. Gentry seeks help from an old friend who once saved his life - but the cartels have just murdered his old friend. As is typical with a Gray Man novel, the action is fast and furious from cover to cover. Even so, the action is plausible (if not probable) and there are no deus ex machinas to deliver the Gray Man from peril. Author Mark Greaney always plays fair with his readers. As the bodies pile up, Gentry, as always, is the last man standing.
The biggest development in the story arc in this edition of the Gray Man novels is that Gentry goes all in to protect and defend the wife of his late friend. He will ultimately come to be known as the deadly operative with a strict moral code - and this novel highlights that this is a man with a heart as well as a deadly warrior. It delivers on several levels.