"Black Mass tells the story of two boys-- John Connolly, and James "Whitey" Bulger-- who grew up together on the streets of South Boston. Decades later, in the late 1970's, they meet again. By then Connolly was a major figure in the FBI's Boston office and Whitey had become godfather of the Irish Mob. What happened between them -- a dirty deal to trade secrets and take down Boston's Italian Mafia in the process-- would spiral out of control, leading to murders, and drug dealing, and racketeering indictments. And ultimately, to Bulger making the FBI's most wanted list."