10 Times Actors Were Edited Out Of Movies

10. Sienna Miller - Black Mass

After appearing in Oscar hopefuls Foxcatcher and American Sniper in 2014, Sienna Miller was set to star in another potential awards candidate the following year.

Black Mass charted the crime career of famous gangster Whitey Bulger (Johnny Depp's best performance of the decade), and while the biopic did try and stick closely to Bulger's real-life story where possible, one major part of his life was omitted from the final film.

Miller was cast as Bulger's girlfriend Catherine Greig, the woman who helped him evade capture for over 15 years. Greig paid for Bulger's medications, ran errands for him, and in general, was an important asset to his criminal activities. Miller had to perfect a Boston accent for the role so she poured a lot of effort into her scenes, but for reasons beyond her control, they never saw the light of day.

Director Scott Cooper told The Boston Globe that while the actress was "fantastic" in the film, the decision to remove her "came down to narrative choices" - namely, Cooper felt that Bulger's later years with Greig were "less dramatic" than the rest of the film.