The Doctor Falls the episode, the Doctor (Peter Capaldi) must save himself and the remaining human population of a gigantic colony ship from Mondas, while also dealing with two different incarnations of the Master (Michelle Gomez and John Simm) at once. The episode features a cameo from the First Doctor, now portrayed by David Bradley. He had previously played William Hartnell, the original First Doctor actor, in the 2013 "Doctor Who" docudrama "An Adventure in Space and Time". Aboard the colony ship reversing from the event horizon of a black hole, the Doctor finds Bill has been converted into a Cyberman. The Master
Space and Time (Doctor Who) canonical. The canonicity of the two mini-episodes was affirmed by Moffat in "Doctor Who Magazine". Moffat stated that, unlike "The Curse of Fatal Death", "Space" and "Time" is not a spoof or a sketch, but rather "a little miniature story" in the style of the "Children in Need" mini-episodes. He described it as "A moment of life aboard the TARDIS. But obviously life about the TARDIS instantly gets you into terrible jeopardy, and all of causality is threatened. As I'm sure it is every day when they get up and have their coffee..." The concept of a TARDIS inside the