Matt Smith and Jenna-Louise Coleman both feature in the new batch of pictures from Steven Moffat's festive instalment 'The Snowmen'.
Copyright: BBC Adrian RogersColeman will appear in the Christmas Day episode as the Doctor's new companion Clara, who Smith recently hinted the Doctor would find attractive.
The special also stars Richard E Grant (Withnail & I) and Tom Ward (Silent Witness), and sees the Time Lord battling some terrifying snowmen with piranha-like teeth.
Set in Victorian London, the teaser trailers show the Doctor attempting to save Clara and two children from the evil snowmen.
'The Snowmen' will air on December 25 at 5.15pm on BBC One in the UK and at 8pm on BBC America.
Watch the trailer for the Doctor Who Christmas special below: