The Skorpion Directive is the fourth book in the Micah Dalton series and the pace is fast and furious. Stone is not averse to killing off characters that have appeared in previous novels. The bad guys (Ultra Nationalist Serbs) are really bad and Micah must use all of his skills to stay alive. I enjoyed the characters, the plot and the dialogue. It is clear that Stone is a former agent. He writes intelligent, forceful novels about his previous profession.