For the first half hour, Mass feels like every other gangster movie ever made. Told from the perspective of the guy brought into the fold by the big boss, random beatings, etc. Then the story shifts to the shady relationship between big boss Whitey Bulger and the FBI and the movie takes off. Depp does a great job of playing it calm even as he’s exploding with rage or threatening other characters. I wish it had been longer and shown us a bit more of his "business"…but no complaints. Black Mass is a fine entry in the genre and an interesting story about loyalty and the dangers of making a deal with the devil.