All 26 episodes of the British sci-fi action drama set in 1980 when Earth is being visited by aliens fleeing their dying planet and seeking human organs to extend their lifespan. Specialist task force SHADO (Supreme Headquarters Alien Defence Organisation), headed by Commander Edward Straker (Ed Bishop), must defend Earth against these mysterious hostile creatures whilst also containing knowledge of their presence to avoid widespread panic. The episodes are: 'Identified', 'Exposed', 'The Cat With Ten Lives', 'Conflict', 'A Question of Priorities', 'E.S.P.', 'Kill Straker!', 'Sub-Smash', 'Destruction', 'The Square Triangle', 'Close Up', 'The Psychobombs', 'Survival', 'Mindbender', 'Flight Path', 'The Man Who Came Back', 'The Dalotek Affair', 'Timelash', 'Ordeal', 'Court Martial', 'The Computer Affair', 'Confetti Check A-O.K.', 'The Sound of Silence', 'Reflections in the Water', 'The Responsibility Seat' and 'The Long Sleep'.
