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
River Song (Doctor Who) In "The Name of the Doctor" (2013), the deceased River's consciousness is summoned from the Library computer, where she has existed since "Forest of the Dead", into a psychic 'conference call' by the Doctor's friend Madame Vastra (Neve McIntosh). There, she and Clara (Jenna Coleman) learn that the Doctor's grave, "his greatest secret", has been discovered. River maintains the psychic link with Clara after the call ends, and counsels her throughout the discovery of the Doctor's tomb, although she seems to be invisible to everyone else. When the Doctor and his companions are threatened by the Great Intelligence, she whispers