The BBC is beginning promotional work in earnest on its Yuletide schedule, and that includes the upcoming Doctor Who Christmas special, Twice Upon A Time.

As such, it’s now released a brand new image from Peter Capaldi’s swansong from the show, as well as the official synopsis.

Here’s the new image…

And here’s the synopsis….

The magical final chapter of the Twelfth Doctor’s (Peter Capaldi) 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).

Furthermore, the running time has been confirmed as 60 minutes.

Twice Upon A Time will screen on Christmas Day.