Review of Mayhem: A Detective Matt Deal Thriller (Detective Matt Deal Thrillers, #2 Writer Stephen Bentley, a former UK police Detective Sergeant, pioneering undercover cop, and barrister has published a sequel in the series about Detective Matt Deal, who is still seeking revenge for the death of his daughter Mercy. A New Jersey Mob boss puts out a contract on Deal for his part in the killings of his hit man. A journey to Mexico finds Matt in the midst of a cartel in the drug wars and face to face with a ruthless capo. Bentley provides some back story for those who haven’t read Mercy, although Mayhem is a…