(2004);  William Pitt  in the historical film  Amazing Grace  (2006); the protagonist Stephen Ezard in the miniseries thriller  The Last Enemy  (2008); Paul Marshall in  Atonement  (2007); Bernard in  Small Island  (2009); and  Sherlock Holmes  in the modern BBC adaptation series  Sherlock  (2010). He will also portray  Smaug  the Dragon through