Teresa Graves was Fred Freiberger's first choice for the role of Maya. Gerry Anderson said his first choice was 'Catherine Schell' . Production of the series began in 1973, but the first episode wasn't broadcast until 1975. Originally conceived as a new season of "UFO" (1970). The plot would have had the aliens from that series trying to destroy SHADO's moonbase by knocking the moon out of orbit. Season two of the series differs noticeably from the first, due to a large number ...[Read Story ]