BBC urges Sherlock fans not to watch leaked final episode

A yet-to-be-released episode of the BBC's Sherlock has been leaked onto file-sharing sites - and the broadcaster is issuing a plea to fans not to share the footage or any spoilers that will arise from it.
BBC News reports that a Russian version of the episode called 'The Final Problem' almost a day before it is broadcast at 21:00 on Sunday 15 January. The show's official account urged fans to not share the file in order to #KeepMeSpoilerFree.
We are aware that #Sherlock episode 3 has been upload