"Lunarville 7" is the 15th episode of Captain Scarlet and the Mysterons, a British Supermarionation television series created by Gerry and Sylvia Anderson and produced by their company Century 21 Productions. Written by Tony Barwick and directed by Robert Lynn, it was first broadcast on 15 December 1967 on ATV Midlands. Set in 2068, the series depicts a "war of nerves" between Earth and the Mysterons: a hostile race of Martians with the power to create functioning copies of destroyed people or objects and use the reconstructions to carry out specific acts of aggression against humanity. Earth is defended by a military organisation called Spectrum, whose top agent, Captain Scarlet, was murdered by the Mysterons and replaced with a reconstruction that later broke free of their control. Scarlet's double has a self-repairing ability that enables him to recover from injuries that would be fatal to any other person, making Spectrum's best asset in its fight against the Mysterons. The first part of a story arc that concludes in "Dangerous Rendezvous", "Lunarville 7" sees Scarlet, Captain Blue and Lieutenant Green investigate a lunar colony after its controller unexpectedly declares the Moon a neutral body in Earth's conflict with Mars. In 1981, the episode was re-edited to form a segment of the American-made Captain Scarlet compilation film Revenge of the Mysterons from Mars. Plot Broadcasting to Earth from Lunarville 7, the Lunar Controller declares the Moon a neutral power in humanity's war with the Mysterons (voiced by Donald Gray). Colonel White (voiced by Donald Gray) sends Captain Scarlet, Captain Blue and Lieutenant Green (voiced by Francis Matthews, Ed Bishop and Cy Grant) to the colony to present the World President's written response to this surprise announcement. Scarlet, Blue and Green are also ordered to investigate the Humboldt Sea on the Moon's far side, where orbital surveillance indicates that a new, unauthorised colony is being built. On arrival at Lunarville 7, the officers are met by the Controller and his assistant, Orson. They are also introduced to the colony's main computer, an artificial intelligence called "Speech Intelligence Decoder" (SID) that identifies humans through recognition discs. After the officers hand over the President's letter, Orson agrees to take them on a trip in a Moonmobile, a vehicle that uses the Moon's low gravity to jump and glide over the lunar surface. However, when Scarlet suggests visiting the Humboldt Sea, Orson abruptly refuses and returns