"Inferno" is the 25th episode of Captain Scarlet and the Mysterons, a British Supermarionation television series created by Gerry and Sylvia Anderson and filmed by their production company Century 21 Productions. Written by Tony Barwick and Shane Rimmer and directed by Alan Perry, it was first broadcast on 16 April 1968 on ATV Midlands. Set in 2068, the series depicts a "war of nerves" between Earth and the Mysterons: a race of Martians with the power to create functioning copies of destroyed people or objects and use them to carry out acts of aggression against humanity. Earth is defended by a military organisation called Spectrum, whose top agent, Captain Scarlet, was killed by the Mysterons and replaced by a reconstruction that subsequently broke free of their control. Scarlet's double has a self-healing power that enables him to recover from injuries that would be fatal to anyone else, making him Spectrum's best asset in its fight against the Mysterons. In "Inferno", the Mysterons destroy and reconstruct a spacecraft to attack a desalination facility in the Andes mountains. Plot While tracking down space debris, the Euro-Space recovery vehicle SKR4 is destroyed by a meteoroid impact. Informing ground control that the crew are abandoning their mission due to a technical fault, a Mysteron reconstruction of SKR4 reverses course for Earth. On Cloudbase, Spectrum learns the target of the Mysterons' latest threat: the Najama complex, an automated facility in the Andes that desalinates seawater to irrigate the interior of South America. Colonel White (voiced by Donald Gray) dispatches a team of field agents, led by Captains Scarlet and Blue (voiced by Francis Matthews and Ed Bishop) and accompanied by the Angel squadron, to the Najama Valley to set up surveillance posts around the complex. Shortly after Spectrum's arrival, Captain Black slips into the ancient Aztec temple where Scarlet and Blue are based and conceals a radio transmitter in the mouth of a statue of the Sun God. Meanwhile, Euro Tracker station is monitoring SKR4's return journey to Earth. When attempts to contact the spacecraft fail, a concerned Major Moran alerts Cloudbase. Transmissions between Euro Tracker and SKR4 are jammed by an external radio signal that is drawing the spacecraft off-course to a new landing site in the Najama area. White deduces that SKR4, which is carrying several explosives packs, is being used as a missile to strike the Najama Valley. As SKR4 enters Earth's