Episodes 14 to 26 from Gerry Anderson's sci-fi series. In 'Confetti Check A-O.K.' Straker remembers the early days of SHADO and the ways in which they effected his marriage. 'E.S.P.' sees John Croxley fall victim to alien mind control after a UFO crashes into his house. 'Kill Straker!' has Foster begin a campaign to undermine Straker's authority. 'Sub-Smash' finds Straker, Foster and Nina trapped at the bottom of the ocean in a damaged submarine. 'The Sound of Silence' sees Foster investigate a mysterious lake. 'The Cat With Ten Lives' has SHADO revise its theories about the aliens. In 'Destruction' the SHADO team become suspicious when the Navy tries to prevent any investigation into a mid-Atlantic confrontation with a UFO. 'The Man Who Came Back' has astronaut Craig Collins return to SHADO after being presumed dead. 'The Psychobombs' sees the aliens make specially-gifted super-villains out of three ordinary citizens. In 'Reflections in the Water' Straker uncovers a cunning alien plot to breach SHADO defences. 'Timelash' sees the SHADO personnel trapped in time. 'Mind Bender' has the astronaut Conroy discover a moon diamond with strange powers. Finally, 'The Long Sleep' finds Straker trying to unlock the secret hidden deep within Catherine Fraser's memory.