Benedict Cumberbatch and Johnny Depp join director Scott Cooper to introduce their film Black Mass. The trio and producers Patrick McCormick and John Lesher talk about channeling the real-life, complicated personas of the Bulger brothers and making this dark crime drama set in Boston. Subscribe: http://bit.ly/subscribetotheBFI. Watch more on the BFI Player: http://player.bfi.org.uk/ Follow us on Twitter: https://twitter.com/BFI Like us on Facebook: https://www.facebook.com/BritishFilmInstitute Follow us on Google+: https://plus.google.com/+britishfilminstitute/