English explorer Travers is determined to track down the mythical Abominable Snowmen which are said to roam the Himalayas. When the Doctor and his companions visit the nearby Detsen monastery they discover that the Yeti are all-too prominent. In fact, they are out to kill anyone who comes near. With Travers' help the travellers discover that the monastery is in the grip of the evil Great Intelligence, a disembodied force which has taken control of the High Lama....

When the TARDIS materialises on an alien planet, the Doctor insists that he and his companions have arrived in the far future. Steven and Dodo think otherwise, however, after they encounter a band of cave-dwelling primitives who are terrified of strangers.

The TARDIS lands on the seveneenth century Cornish coast, and its crew stumble upon a plot by the local Squire to receive and offload contraband goods. The Doctor meets the churchwarden, whose last words to him concern the whereabouts of hidden treasure. When pirate captain Samuel Pike learns of this, he kidnaps the Doctor and demands to be given the cryptic clue.

An exciting 'lost' television adventure starring second doctor Patrick Troughton with linking narration by Colin Baker.

The Cybermen make their first ever appearance whilst William Hartnell's Doctor nears the end of his first incarnation, in this classic soundtrack adventure with linking narration by Anneke Wills. The year is 1986, and at the South Pole the crew of the Snowcap Base have detected a new planet on their radar. The arrival of the Doctor, Ben, and Polly at the Base coincides with another landing, that of a spaceship whose humanoid passengers have used cybernetics to replace their limbs and vital organs.