Its Christmas 1851 and Cybermen stalk the snow of Victorian London. But when the Doctor meets another Doctor, the two must combine forces to stop the rise of the Cyberking. The Doctors scale a building with the aid of a CyberShade! Starring David Tennant and David Morrissey. Watch more high quality videos on the new BBC America YouTube channel here: http://www.youtube.com/bbcamericatv
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