An Adventure in Space and Time led to him being cast as the First Doctor himself in the 2017 "Doctor Who" episodes "The Doctor Falls" and "Twice Upon a Time" and in a series of audio adventures for Big Finish Productions. In 1966, William Hartnell (David Bradley) is in his dressing room at the BBC. He insults a stagehand who calls him to the set, where the delay caused by his absence is noticed. Hartnell enters in costume, ready to film his last moments as the First Doctor and stands in front of the TARDIS console. Three years earlier, BBC executive Sydney Newman (Brian Cox) is
Space and Time (Doctor Who) TARDIS suddenly shakes and the lights go out. The Doctor asks Rory if he dropped a thermal coupling, which Rory admits to and apologises for doing. Amy then apologises as well and, at the Doctor's confusion, explains that Rory was looking up her skirt through the glass floor when he dropped the thermal coupling. The Doctor then notes that they have landed through "emergency materialisation" which should have landed the TARDIS in the safest space available. The lights come on, revealing another TARDIS inside the control room — the TARDIS has materialised inside itself. The Doctor experimentally walks through the