Born to Archie and Molly Harper, Jack lived a carefree life as a child living in Boston. His Father worked as beat cop for 40 years before being shot and killed by Benny “Buster” Roselli, King Pin of Boston. After the death of Archie, Jack joins the police force and beings his search for justice for his father. After many years of work and with the help of his partner, William Kinley, Jack finally tracks down “Buster” Roselli to one of his warehouses by the docks. After a shootout with Roselli and his gang Jack arrests “Buster” but at the cost of his partner.
Jack is celebrated as hero for his arrest in bringing down Boston’s Biggest mobster, and in doing so catches the eyes of the National Government. After being approached by a couple of G-men, Jack accepts the responsibility of being a government agent and begins a life of protecting not just Boston’s citizens but all the people of the United States of America.