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
Doctor Who in Canada and the United States CBC did not renew the program and it would not reappear on the network for 40 years. The BBC series was originally sold to television stations in the United States in 1972, with Time-Life Television syndicating selected episodes of Jon Pertwee's time as the Doctor. The series did not do well, despite an interesting write-up some years earlier in "TV Guide". Apparently, program directors of the commercial television stations that picked up the Jon Pertwee series did not know that the program was an episodic serial, and so it was constantly being shuffled about in the programming schedules. In 1978,