And as some fans with particularly good memories may recall, one such visit has actually been chronicled in the series before, with the Doctor taking wife River Song there offscreen prior to the events of 2011 episode A Good Man Goes to War.
This year’s Doctor Who navidad special could be a rare double Doctor episode, with Peter Capaldi’s departing thirteenth incarnation being joined por the 1ST Doctor, played por An Adventure in el espacio and Time estrella David Bradley.
“Do tu feel that River Song’s story is done?”Showrunner replied: "Well, yes, that does seem like the end to me. Except, of course, it isn’t, and can’t be. There’s always the chance that River will mostrar up again."
While the opening episode of Doctor Who’s tenth series was all about Pearl Mackie’s new companion Bill, eagle-eared fans will have a noticed a sweet little callback to anterior co-lead Jenna Coleman’s Clara Oswald towards the end of the story.