Twice Upon a Time (Doctor Who) Twice Upon a Time (Doctor Who) "Twice Upon a Time" is an episode of the British science fiction television series "Doctor Who", written by Steven Moffat, directed by Rachel Talalay, and was broadcast as the thirteenth Christmas special on 25 December 2017 on BBC One. It features the final regular appearance of Peter Capaldi as the Twelfth Doctor, the first official appearance of Jodie Whittaker as the Thirteenth Doctor, and guest-stars David Bradley as the First Doctor, having previously portrayed original First Doctor actor William Hartnell in the 2013 docudrama "An Adventure in Space and Time". Pearl Mackie guest stars
Pendragon: Journal of an Adventure through Time and Space Pendragon: Journal of an Adventure through Time and Space Pendragon: Journal of an Adventure through Time and Space, commonly known as Pendragon, is a series of ten young-adult science fiction and fantasy novels by American author D. J. MacHale, published from 2002 to 2009. The series chronicles the adventures of Bobby Pendragon, an American teenager who discovers that he must travel through time and space to prevent the destruction of the ten "territories": critical locations throughout the universe. The series has sold over a million copies. Each book deals with the battle over a particular territory, fought by Bobby's side