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 Day of the Doctor in a new story was William Hartnell's First Doctor, stating, "You'd want him to come and say 'What in the name of God have I turned into?' That's the confrontation that you most want to see, to celebrate 50 years. Going round and round in circles on it I just thought, 'What about a Doctor that he never talks about?' And what if it is a Doctor who's done something terrible, who's much deadlier and more serious, who represents that thing that is the undertow in both David and Matt. You know there's a terrible old man inside them. Well,