Following the batch of set images from the Doctor Who 2013 Christmas Special that recently hit the net, a video has leaked online as well.
Potential spoilers follow.
We know it's Matt Smith's last episode, and we also know the episode will feature the Cybermen.
If you take a close look at the video, you see something in Matt Smith's hand that looks to be the head of a Cyberman!
Jenna Coleman is featured in the video as well.
The Doctor Who Christmas Special airs this December featuring Peter Capaldi as the new Time Lord.