Paradise Towers two elderly residents ("rezzies") live. Tilda and Tabby explain that all the able-bodied men left the Towers to fight a war, leaving behind only children and the elderly. The only other man still loose in the Towers is Pex, a would-be hero, who appoints himself Mel's guardian. At the Caretaker control centre, the Doctor meets the Chief Caretaker, who greets him as the Great Architect, designer of Paradise Towers, and then promptly calls for him to be killed The Doctor cites an imaginary rule from the Caretakers' manual, confusing them enough to make his escape. Mel and Pex meanwhile have
The Doctor (Doctor Who) elaborate that the Doctor chose the name as a promise for the sort of man he wants to be: "Never cruel or cowardly. Never giving up and never giving in." By contrast, the Eleventh Doctor spoke of the War Doctor (John Hurt) as being the man who broke that promise, being the one to fight in the Time War before learning the actual fate of the Time Lords. Since contradicted by the television series, the 2003 Telos novella "Frayed" by Tara Samms, set prior to the programme's first episode in 1963, presents the alternative explanation that the Doctor was given