A celebration of science fiction's ability to foretell the shape of future society, touching on the impact of literary works, movies and TV series. This episode explores early science-fiction writers, including Mary Shelley (Frankenstein), Jules Verne (20,000 Leagues Under the Sea) and HG Wells (Things to Come and The Time Machine). Plus, the possibility of nuclear apocalypse, as portrayed works including Herman Kahn's On Thermonuclear War, Stanley Kubrick's Dr Strangelove, Sidney Lumet's Fail Safe, Nevil Shute's On the Beach and Peter Watkins' The War Game