UFO

Cmdr Ed Straker and Col Virginia Lake disappear and are discovered unconscious near the dead body of a Shado operative (Turner). Col Foster and co. try to understand what has happened. Straker picks up Lake at night, and as the pair drive they observe a UFO, which is following them, The UFO starts to attack them, and they radio for assistance, but are unable to contact SHADO HQ, and they drive off the road, under a tree, and when Straker says 'freeze', they're hit with some beam. When they arrive back at the studio gate, it's mid-day, with a bright sun, and they discover the base and surrounding area are frozen in time and space. They move through the base, they see everyone frozen, including all the equipment, and a bird in mid-air. Straker observes and tries to move a stool fixed in mid-air, which he hits with a stick (they are able to pick up and manipulate the stick). At this point he realises there are inconsistencies in what exactly is frozen (they are also able to use a lift) and surmises it is all part of an Alien plot. In the lot they come across one person who isn't affected; Turner, who has become an Alien accomplice. He tells Straker of the powers they have given him and a device he's planted in the base disabling SHADO HQ. A UFO is now hovering around the base and Straker tries to take it out. Turner is too powerful and can actually skip around in time and space faster than the eye can see, and prevents this. A chase and battle ensue with a power-mad Turner taunting the pair. Finally Straker out smarts him and is able to destroy the UFO.

Lieutenant Andy Conroy is investigating a crash involving an alien craft on the Moon when he suddenly gets caught up in a Wild west type shoot-out with Mexican brigands. Back at the SHADO's earthly base another officer, Beaver James, gets involved in another shoot-out, this time with aliens. Then a voice shouts "Cut!" and the whole is seen to be a film being made at the studios telling the story of Straker's life. So what's real and what's imagined?

Straker's son John lives with Straker's ex-wife Mary, who has re-married. Straker is having a day out with the boy, John, but it ends in an argument with Mary and John is run over and seriously hurt. Drugs can be obtained to save him in America and a SHADO craft is sent to fetch them. However, Straker gets an alert call to say that an alien defector which could do untold damage to Earth is in the range of the SHADO craft. SHADO can destroy the alien but it means diverting the means to save John.