UFO (TV series)
Following poor ratings for "Joe 90" (1968–69) and the cancellation of children's espionage television series "The Secret Service" (1969) after only one series, Lew Grade approached Gerry Anderson to look into creating his first live-action TV series. Anderson worked with his wife, Sylvia, and producer Reg Hill to create a sci-fi adventure series based around UFOs. Anderson said the core idea for the series was that UFO sightings were a common issue during the late 1960s and that idea of aliens harvesting human organs came from the work of Christian Barnard and his pioneering transplant operations. The creative team initially envisioned an organisation called UFoeDO (Unidentified Foe Defence Organisation), which was to become the secret SHADO (Supreme Headquarters Alien Defence Organisation).
UFO (TV series)
"UFO" featured key motifs and plot elements that shared a conceptual continuity with nearly all of Anderson's previous TV work. Every series from "Supercar" onwards focussed on the heroic exploits of a secret but benevolent group or agency (the Supercar team, World Space Patrol, WASP, International Rescue, Spectrum, WIN, BISHOP, SHADO), operating from a remote or hidden base, and equipped with futuristic technology and/or advanced transport vehicles, whose mission is to protect the people of Earth from danger and disaster, and counter the nefarious schemes of a sinister, devious and elusive enemy (Masterspy, the Subterrains, the Aquaphibians, The Hood, The Mysterons, the aliens).