The Doctor will be in on Christmas Day.

As teased in the following trailer, Doctor Who will run a special holiday episode on December 25, one that features kids in danger; really angry beasts; lively snowmen; and new sidekick Jenna-Louise Coleman, who debuted in an unusual manner on the Doctor Who Season 7 premiere.

Watch Coleman and star Matt Smith introduce our first look at the episode now:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.