Tunnel Under the World (S2E8): Déja vu: as Guy Birkett goes through the day he has a nagging feeling that he's been here before, experienced this already, except the details are always different. Is it conceivable that he is merely a simulacrum, the ultimate in consumer market surveying? He finds there is a reality behind the reality he knows, but for a pawn to question the reality of the chessboard is a perilous undertaking. It features Ronald Hines, Petra Davies, Gay Hamilton, and Peter Madden. Out of the Unknown is a classic British BBC television science fiction and horror anthology drama series, which was broadcast between 1965 and 1971. It features adaptations of stories by famous authors including Isaac Asimov, J.G. Ballard, Frederik Pohl, and John Wyndham.