Black Mass: Whitey Bulger, the FBI, and a Devil's Deal by Dick Lehr and Gerard O'Neill is the story of John Connolly and James "Whitey" Bulger. The pair knew each other when they were children and grew up to take different paths (Connolly becoming an FBI agent and Bulger becoming a career criminal) until they met again when Bulger became an FBI informant. While working together to dismantle the Italian mafia in Boston, their plans lead to multiple murders, drug dealing, and racketeering and they both, eventually, (Bulger was able to evade capture for 16 years) end up in prison.
The intriguing, crime-filled lives of Whitey Bulger and John Connolly are perfect for a movie so of course, one was made. Black Mass opens in theaters tomorrow, September 18, and has a great cast, including Johnny Depp as Bulger, Joel Edgerton as Connolly and, Benedict Cumberbatch as Bulger's brother Bill. Dakota Johnson, Kevin Bacon, and Adam Scott also star.