The Time of the Doctor is almost here.

On December 25, BBC America will air a Doctor Who Christmas special that marks the final episode with Matt Smith in this beloved, titular role.

We've already posted photos from the installment and now we're here with a new trailer for the outing, which will focus on the Doctor and Clara trying to discover what mysterious messages in the stars could possibly mean...

... and how the Doctor's very own fate is tied up within them. Watch now:

NOTE: Before Christmas - and after! - be sure to catch up on all you've missed when you watch Doctor Who online.

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