Doctor Who 2017's Christmas special airs tonight at 5:30PM but who's on the cast and what's going to happen?
Called Twice Upon A Time, the 2017 Doctor Who Christmas special is the magical final chapter of the Twelfth Doctor’s journey sees the Time Lord team up with his former self, the first ever Doctor (David Bradley - Harry Potter; Game Of Thrones) and a returning Bill Potts (Pearl Mackie), for one last adventure.
Two Doctors stranded in an arctic snowscape, refusing to face regeneration.
Enchanted Glass People, stealing their victims from frozen time.
And a World War One Captain destined to die on the battlefield, but taken from the trenches to play his part in the Doctor's story.
An uplifting new tale about the power of hope in humanity’s darkest hours, Twice Upon A Time marks the end of an era. But as the Doctor must face his past to decide his future, his journey is only just beginning...
Twice Upon A Time is written by Steven Moffat, directed by Rachel Talalay, and executive produced by Brian Minchin. The 60-minute special guest stars Mark Gatiss as The Captain and Nikki Amuka-Bird as the voice of the glass woman, and will see Peter Capaldi’s Doctor regenerate into the Thirteenth Doctor (Jodie Whittaker).
Outgoing Doctor Peter Capaldi said ahead of tonight's show: "Doctor Who has taken me on an amazing journey.
"Now that it’s coming to an end, I wish the Doctor all the very best for the future, and the past, and everything in-between. Time I was off."
Doctor Who 2017 Christmas special airs on BBC One tonight at 5:30PM.