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
David Banks (actor) David Banks (actor) David Banks (born 24 September 1951 in Hull, England) is a British actor. As a theatre actor, he has played many leading roles in London and throughout the UK. His numerous TV appearances include long-running portrayals in "Brookside", playing the wrongly convicted murderer Graeme Curtis, and 181 episodes of L!ve TV’s drama series "Canary Wharf" as Max Armstrong, head of news, who was finally abducted by aliens. He also appeared in "EastEnders" in 1992, playing the photographer, Gavin, at Michelle Fowler's graduation ceremony. During the 1980s, he was the Cyberleader in the science fiction series "Doctor Who"