"Manhunt" is the fourth 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.
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.
[2] The puppet-scale truck interior was a re-dress of the Zero-X MEV cockpit set that was originally built for the film Thunderbirds Are Go (1966) and last seen in Captain Scarlet's first episode, "The Mysterons".
[5] Spectrum makes a second attempt to apprehend Captain Black in "Treble Cross", which re-uses the scale model footage of the detector trucks recorded for "Manhunt".
[7] Paul Cornell, Martin Day and Keith Topping, authors of The Guinness Book of Classic British TV, consider "Manhunt" to be one of several Captain Scarlet episodes that "seem little more than left-over Thunderbirds scripts".
Among McNamara's criticisms are the episode's failure to significantly develop Black's character, adequately explain his motivation for sparing Symphony Angel, and even reveal why the Mysteron agent is so interested in the Culver Atomic Centre in the first place.