One of the most highly anticipated films of the year, Black Mass, just made its TIFF debut.

Based on the 2001 true crime novel “Black Mass: The True Story of an Unholy Alliance Between the FBI and the Irish Mob”, Johnny Depp disappears into the role of Whitey Bulger, one of Boston’s most notorious gangsters.

The film is visceral and violent, tracking Bulger’s rise and ultimate downfall, immersing viewers into the world of organized crime in the 1970s.

Speaking with ET Canada’s Cheryl Hickey, Fifty Shades of Grey star Dakota Johnson offered her thoughts on why people are so attracted to gangster movies.

It’s an insight into the mischievous people who aren’t afraid of breaking the laws,” Johnson said.

It’s kind of like a breath of fresh air; people think it’s fascinating and fun and it’s like, ‘Oh my god, how could you do that.’ It’s breaking the rules, it’s breaking the law. They’re outlaws. It’s why people are fascinated by people who have big personalities,” said the actress, who plays Lindsay Cyr, the mother of Bulger’s child.