Colony in Space (6) Doctor Who : Season 8 Episode 20
TV-PG BBC Television 25m
Aired: May 15th, 1971 @ 5:15 PM EST on BBC Television
The Doctor and the Master are taken into the Primitive city, where the Master hopes to find the doomsday weapon, while Dent forces the colonists to leave the planet even though their ship is likely to explode.
