Amy Pond and Rory Williams are trapped on a crashing space liner, and the only way the Eleventh Doctor can rescue them ... And what is lurking in the fogs of Christmas Eve?

In the era of the Marvel Cinematic Universe, Steven Moffat decided to write a Doctor Who Christmas special that was inspired by Christopher Reeves' 1978 Superman movie. It was an odd choice to ...

And amongst them, the Doctor. Rescuing Clara from a family Christmas dinner, the Time Lord and his best friend must learn what this enigmatic signal means for his own fate and that of the universe.

Christmas special "Last Christmas" is one of Doctor Who's most confusing sci-fi homages. Here's how the Inception-style dream layers work.