We've known for some time that 'Shaun of the Dead' and 'The World's End' star Nick Frost would lock wits with 'Doctor Who' for the 2014 Christmas special, but who knew his role would be so ... jolly? Watch the Doctor enlist Santa Claus' help in defeating some icky aliens in the first teaser trailer for 'Doctor Who''s 2014 Christmas special!

You're warned of a few light spoilers for the 'Doctor Who' series 8 finale "Death in Heaven," but Christmas came a little bit early this year as the final moments of Peter Capaldi's first season introduced Nick Frost's mysterious Father Christmas. The BBC followed with our first trailer for the December 25 episode, revealing some particularly sticky aliens gestating in an inhospitable-looking base, as the Doctor brazenly prepares to enter.

In addition to frequent Edgar Wright and Simon Pegg collaborator Frost portraying Santa Claus, the episode also features among its guest cast Michael Troughton (son of Patrick Troughton, the second Doctor), Nathan McMullen, Natalie Gumede and Faye Marsay. There's no sign of Clara in the spot, despite Jenna Coleman being present among the guest cast, though we do seem to have those rumors of a companion's exit always swirling about...

In any case, check out the first teaser trailer for 'Doctor Who''s 2014 Christmas special above, and give us your predictions in the comments!

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