The first official synopsis for this end of the year’s Doctor Who Christmas Special reveals a sad goodbye for Peter Capaldi’s Twelfth Doctor. The synopsis was revealed in one of the Blu-ray copies of the Christmas Special online, titled “Twice Upon a Time,” on the BBC’s online store. See synopsis below.
“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 realize the resilience of humanity, discovering hope in his darkest frozen moment. It’s the end of an era. But the Doctor’s journey is only just beginning.”
The synopsis seems to show most Doctor Who fans surmised already about the First Doctor played by David Bradley in “Twice Upon a Time.” In the Doctor Who Season 10 finale, the Doctor encountered the First Doctor in a snowy scene.