BOSTON (CBSBoston.com) – A tentative release date has reportedly been announced for the Johnny Depp-as-Whitey Bulger film.

The movie, which has a working title of Black Mass, is set to be released on September 18th, 2015 by Warner Brothers, according to The Hollywood Reporter.

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Based on the book Black Mass: Whitey Bulger, the FBI and a Devil’s Deal, by Dick Lehr and Gerard O’Neill, filming took place in and around Boston during much of May.

In addition to Depp as Bulger, the film will star Benedict Cumberbatch as Whitey’s brother, Billy Bulger; Jesse Plemons as Whitey’s longtime partner in crime, Kevin Weeks; Sienna Miller as Whitey’s lover, Catherine Greig; Dakota Johnson as Lindsey Cyr, Whitey’s former girlfriend and mother of his only child; Rory Cochrane as Steve Flemmi, another member of the Winter Hill Gang; Julianne Nicholson as John Connolly’s wife, Marianne; and Adam Scott as FBI Agent Robert Fitzpatrick.

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Rounding out the main cast are David Harbour, Jeremy Strong, Brad Carter, W. Earl Brown and Corey Stoll.

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