S15E17
5.8
Underworld (1)
5.8(5)January 7, 1978
Deep space, an unknown time. The Doctor encounters the Minyans, survivors of a race the Time Lords unwittingly obliterated early in their own history. The Minyans are searching for their race's lost gene banks, a quest which takes them to the edge of the galaxy…
Based on 5 votes