Black Mass is a 2015 American crime film directed by Scott Cooper and written by Mark Mallouk and Jez Butterworth, based on the 2001 book Black Mass: The True Story of an Unholy Alliance Between the FBI and the Irish Mob by Dick Lehr and Gerard O'Neill. The film has an ensemble cast starring Johnny Depp, Joel Edgerton, Benedict Cumberbatch, Kevin Bacon, Jesse Plemons, Peter Sarsgaard, Rory Cochrane, Adam Scott, Dakota Johnson, and Corey Stoll.
The film follows the criminal career of infamous Irish-American mobster Whitey Bulger (Depp). Principal photography of the film began on May 19, 2014 in Boston, and wrapped on August 1, 2014. The film had its world premiere at the 72nd Venice International Film Festival, and was released by Warner Bros. worldwide on September 18, 2015.
In 1975, James "Whitey" Bulger (Johnny Depp), leader of the Irish-American Winter Hill Gang, controls almost all of organized crime within South Boston, along with his right-hand man Stephen Flemmi (Rory Cochrane), newcomer Kevin Weeks (Jesse Plemons), and cold and calculative hitman, Johnny Martorano (W. Earl Brown). Bulger's hold over South Boston is challenged by the northern Angiulo Brothers, who head the Boston branch of the New England Mafia family.