An Acceptable Revenge is the 14th Murder Mystery for W. Matthew Hart and the story introduces a new character. Mr. Nathan Hastings who is a self-employed cyber-detective base out of New York City, NY and he is a recent college graduated. On a vacation trip he meets an older man, Mr. Matthias George from Sydney, Australia who is a rare gems merchant and he travels all over the world looking for precious stones. Despite their age difference, these two men, and their companions are on a cruise and they become close friends. Years later Matthias is murdered and the law enforcement authorities in Australia and the United States are clueless about who committed the crime or even why it took place. This kind of detective work is quite different for Nathan who is more used to investigating computer crimes and internet viruses. But at the request of Matthias' under brother and partner Nathan agrees to investigate the crime.