The Ultimate Vampire Resource and Directory

On a mission to Mars in 2068, a Mysteron installation is attacked and destroyed by a team of three Earth explorers, including Captain Black, leading the Mysterons to declare a "War of Nerves" on Earth. The Mysterons have the ability to replicate and then control any person or object they first kill or destroy, through their power of "retro-metabolism". They use this power to conduct a war of terror against Earth primarily aimed at the world leaders, major cities, industrial and defense establishments, and, of course, "Spectrum" and its airborne Cloudbase headquarters. The Mysterons are never seen, their presence is indicated by two circles of light tracking across the scene. Their actions on Earth are always through their replicated intermediaries with the possible exception of Captain Black whose death is never portrayed and who may simply have been "turned" as their first agent whilst still on Mars.