Black Mass (2015)

Johnny Depp has his own cottage true-crime gangster movie
industry with, Donnie Brasco, Blow, Public Enemies and now this,
based on the same James "Whitey" Bulger that inspired Jack
Nicholson's character in The Departed. Depp is perhaps career
best creating a monstrous and terrifying unlikable villain,
though director Scott Cooper just fails to convert. There's tons
to recommend here though including a stella cast.