On a mission to collect the six segments of the Key to Time, the Doctor and Romana travel to the planet Ribos where the first segment is protected by the monstrous Shrivenzale.
- Drama
- Year 1978
- 25 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
