Supermarionation a puppet hand, suspended by wires, operating the controls of "Thunderbird 1". The term "Supermarionation" was not coined until during production of later episodes of "Supercar". As a result, "Four Feather Falls" is often omitted from lists of Supermarionation productions. Two feature films based upon "Thunderbirds" were also made with Supermarionation: "Thunderbirds Are Go" (1966) and "Thunderbird 6" (1968). Numerous episodes of "Thunderbirds", "Captain Scarlet", and other series were also edited together (sometimes with the addition of new narration) to form movie-length features for VHS release and TV syndication in the 1980s. "The Secret Service" was actually a hybrid of
Tex and the Lord of the Deep In the early 1980s, Duccio Tessari took on the project that was initially conceived as a pilot for a television series produced by RAI, Italy's national public broadcasting company. Giuliano Gemma was cast as Tex who had worked with Tessari on several films in the past, including "A Pistol for Ringo", "My Son, the Hero", "Kiss Kiss...Bang Bang" and "The Cats". Tessari and his screenwriters focused on three stories from the "Tex" comics with fantastic undertones. These included "El Morisco", "Sierra Encantada" and "Il signore dell'abisso" which were written by Bonelli and drawn by Guglielmo Letieri. Filming took place between