Tracing the fifth segment of the Key to Time to the third moon of Delta Magna, the Doctor and Romana are soon caught up in the conflict between humans and the Swampies.
- Drama
- Year 1978
- 23 min
In the first of a six-story quest, the Doctor is ordered to find the six segments of the Key to Time before the cosmos is plunged into chaos. But it begins badly for the Doctor, due to a megalomaniac, a con man and an icily beautiful, clever new companion.
- Year: 1978
