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 Bradley (English actor) David Bradley (English actor) David John Bradley (born 17 April 1942) is an English actor. He is known for playing Argus Filch in the "Harry Potter" film series, Walder Frey in the HBO fantasy series "Game of Thrones" and Abraham Setrakian in the FX horror series "The Strain". He is also an established stage actor with a career that includes a Laurence Olivier Award for his role in a production of "King Lear". Other acting credits include the BBC series "Our Friends in the North", the ITV series "Broadchurch" (for which he won the best supporting actor award at the