Sienna Miller's 'Black Mass' Role Cut as Film Was Being Edited

Sienna Miller's role in the highly-anticipated movie "Black Mass" was cut from the film just before its release this month.

"Black Mass" has created some Academy Award buzz with Johnny Depp playing real-life convicted Boston mobster Whitey Bulger. Miller played Bulger's girlfriend Catherine Grieg who helped him evade authorities, according to E! News.

"Black Mass" director Scott Cooper told the Boston Globe he thought Miller was "fantastic" with Depp, but cutting her role out "came down to narrative choices" because Bulger's life on the run once he left Boston was less dramatic.

Miller, who appeared in two Oscar-nominated movies last year, "American Sniper" and "Foxcatcher," told the Globe last year that she had worked with a dialect coach for the project.

"Up until the day before I flew here, I couldn't do it and it sounded stupid," said Miller. "And I was sort of religiously watching every film ever set in South Boston: 'Good Will Hunting,' 'Gone Baby Gone,' 'The Town.' Catherine had a thick accent, so I hope I do it justice."

Bulger was ruthless in the 1970s as the boss of Boston's Winter Hill mob and is currently serving two life sentences for murder and other crimes, reported Deadline.com. He spent a decade on the FBI's Ten Most Wanted list before he was captured inn 2011 in Santa Monica, California.

The Guardian praised the movie and performances by Depp and Joel Edgerton, who played Bulger's FBI handler John Connolly.

"Johnny Depp and Joel Edgerton both give richly absorbing performances of preening macho self-regard and self-delusion," said The Guardian's Peter Bradshaw. "Depp's Whitey is a kingpin criminal who makes a very big deal of his loathing of rats and informants – but he is the biggest informant-rat of all."

"Edgerton's Connolly is a lawman who hates drug-dealers, but he has enriched himself and advanced his career by promoting a gangster, notorious for introducing 12-year-olds in Boston to drugs," said Bradshaw.

"Black Mass," which also stars Oscar nominee Benedict Cumberbatch, Dakota Johnson, Kevin Bacon, and Corey Stoll, is scheduled to hit theaters on Sept. 18.

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