Black Mass is a film about impressions, though none but Depp’s “Whitey” Bulger are particularly good. I’m not just talking about the overall poor quality of the Boston accents in this film, particularly Cumberbatch, who despite his best effort, is unable to conceal his identity as a Brit for more than a few words at a time. Black Mass as a whole is a sleepy, overly self-serious impression of a Scorsese-style gangster flick, with neither the style nor substance it needs to tell the bizarre and fantastic story of Bulger’s dealings with the FBI. Instead, the film is a insipid slog through the events of Bulger’s life, and seems completely disinterested in making anything other than a regurgitation of the same material covered in other, better gangster films.
Simply Film 