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
John Bradley (English actor) John Bradley (English actor) John Bradley West (born 15 September 1988), credited professionally as John Bradley, is an English actor, best known for his role as Samwell Tarly in the HBO fantasy TV series "Game of Thrones". Bradley was born and grew up as a Catholic in the Wythenshawe district of south Manchester and attended St Paul's Roman Catholic High School. He has a sister who is 13 years older than him. In 2005, he began attending Loreto College in the Hulme area of Manchester, where he studied Drama and Theatre Studies. He graduated from Loreto in 2007. He received