Twice Upon a Time
Peter Capaldi’s final episode as the Twelfth Doctor is titled Twice Upon a Time. Written by departing showrunner Stephen Moffat and directed by Rachel Talalay, Twice Upon a Time sees David Bradley return as the First Doctor, Mark Gatiss guest starring as ‘The Captain’ and Pearl Mackie appear as our beloved Bill Potts. The trailer opens with footage from the first episode of The Tenth Planet, the final story in the First Doctor era. The trailer also shows a glimpse of one of the First Doctor’s companions, Polly, originally portrayed by Anneke Wills.The Tenth Planet, which aired in 1966, saw the first appearance of the Cybermen, and the First Doctor’s regeneration in the final episode.
Twice Upon a Time airs Christmas Day in the UK and Boxing Day in Australia.