It’s Yuletide and You Are Dying: Watch the Doctor Who Christmas Special Trailer

While the most recent teaser clip for the Doctor Who Christmas special definitely scared us into staying off Santa’s Naughty list, the official trailer guarantees that this will be a very creepy Christmas. We’ve got mysterious bodies rising up from sleep (or death), an alien infestation, and a chalkboard that won’t let you erase the message “You Are Dying.”

Also, we’re pretty sure the Doctor was looking for the Ghostbusters, not Old Saint Nick, when he says, “Come on, it’s Christmas, the North Pole—who you gonna call?” But as we know, Santa has an agenda.

Watch the trailer:

The Doctor Who Christmas special airs December 25 at 9 p.m. EST.