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Black Mass (2015)

122 min · Crime, Drama, action film, biographical film, crime film, drama film, satanic film

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2025-09 to 2026-08

A mobster and an FBI agent form an unholy alliance in the heart of South Boston.

The story

In 1975, James "Whitey" Bulger, leader of the Winter Hill Gang, controls most organized crime within South Boston. His supremacy is challenged by the North End-based Angiulo Brothers, a rival gang that is part of the New England Mafia family. When a rival gang's hitman murders a Winter Hill soldier, Bulger becomes an informant for FBI agent John Connolly. Connolly believes he can infiltrate the Angiulo Brothers' organization with Whitey's help. Although Whitey hates the idea of being a rat, he understands what the resultant protection would afford him, his gang, and his family. The alliance creates a complex dynamic as the lines between law enforcement and organized crime begin to blur.

Full plot (contains spoilers)

In 1975, James "Whitey" Bulger leads the Winter Hill Gang in South Boston. After a rival gang, the Angiulo Brothers, murders one of his men, Bulger becomes an informant for FBI agent John Connolly. While Connolly uses Bulger to infiltrate the New England Mafia, Bulger uses Connolly's protection to expand his criminal empire. The relationship becomes increasingly intimate and compromised, as Connolly begins accepting gifts from the gang. The alliance is tested when a fellow agent, John Morris, becomes suspicious, and a prosecutor, Fred Wyshak, demands Bulger's arrest. Internal tensions rise as Bulger's behavior becomes more violent and unpredictable following his mother's death in 1985. Eventually, a front-page story in The Boston Globe exposes the FBI's links to organized crime, leading to the arrest of Connolly and his associates. Bulger eventually flees Boston in 1995, remaining on the FBI's most wanted list until his arrest in 2011. The film depicts the true story of the alliance between the FBI and the Irish Mob.

First release year
2015
Runtime (minutes)
123
Production countries
United States
Original languages
English
Directors
Scott Cooper
Writers
Mark Mallouk · screenplay; Jez Butterworth · screenplay
Cast and characters
Johnny Depp · Bulger; Joel Edgerton · Connolly; Benedict Cumberbatch · William "Billy" Bulger; Kevin Bacon · Charles McGuire; Jesse Plemons · Kevin Weeks; Dakota Johnson · Lindsey Cyr; Juno Temple · Deborah Hussey; Sienna Miller · Catherine Greig
Genres
biographical crime drama; crime drama; crime thriller
Themes
corruption; loyalty; betrayal
Tone and mood
gritty; tense
Setting
South Boston and other locations in Massachusetts and California during the 1970s, 1980s, and 1990s.
Premise and plot tags
true story; organized crime; FBI
Source material / true-story basis
Black Mass: The True Story of an Unholy Alliance Between the FBI and the Irish Mob
Reception
The film received generally positive reviews and was praised for Johnny Depp's performance.
Reported review scores
Rotten Tomatoes · score: 74% · scale: percentage · review count: 289; Metacritic · score: 68 · scale: 100 · review count: 43
Production trivia
The film was based on a book published in 2000.; Sienna Miller's scenes were cut from the final film.
Catalogue themes and tags

Boston, Mafia, Mafia Boss, Mafiosi

Film metadata comes from the open sources listed in Credits & Contact. Catalogue details may be incomplete.

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