Doctor Who, Christmas Special: Twice Upon a Time (2017)

Two Doctors stranded in a forbidding snowscape, refusing to face regeneration. And a British army captain seemingly destined to die in the First World War, but taken from the trenches to play his part in the Doctor's story. This is the magical last chapter in the Twelfth Doctor's epic adventure. He must face his past to decide his future. And the Doctor will realise the resilience of humanity, discovering hope in his darkest frozen moment.

This Christmas, the Doctor, the Doctor, and Bill return in ?Twice Upon A Time?.

Join the cast and crew of Doctor Who for this special inside look at the making of 'Twice Upon A Time.'

A look back at Peter Capaldi's era as the Twelfth Doctor ? from his very first script read through to his very last. Also featuring Steven Moffat reflecting upon his time as a writer and then later as Executive Producer, revealing some of his best and worst moments from his tenure, as well as his favourite episodes.