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) that name by medical staff on a foreign planet and liked it. To make up for his lack of a practical name, the Doctor often relies upon convenient pseudonyms. In "The Gunfighters" (1966), the First Doctor uses the alias Dr. Caligari. In "The Highlanders" (1966–67), the Second Doctor assumes the name of "Doctor von Wer" (a German approximation of "Doctor Who"), and signs himself as "Dr. W" in "The Underwater Menace." He similarly poses as "the Great Wizard Quiquaequod" in "The Dæmons" ("qui", "quae" and "quod" being, respectively, the masculine, feminine and neuter Latin translation of the nominative form of