Kill Straker! (E7): Paul Foster and his co-pilot Frank Craig are attacked by a UFO which infiltrates their minds and hypnotises them into wanting to kill Straker. Straker actually saves their lives when their craft is about to be destroyed, but, on their return to SHADO, Craig makes an attempt on Straker's life whilst Foster seeks to discredit him. It features Ed Bishop, Keith Alexander, David Sumner, Michael Billington, Gabrielle Drake, and Antonia Ellis. UFO is a British science fiction drama television series, which originally aired from 1970 to 1971. It concerns the covert efforts of the Supreme Headquarters Alien Defence Organisation (SHADO) to prevent an alien invasion of Earth.