Doctor Who Season 8 Episode 15
The Time Lords takes control of the TARDIS and the Doctor and Jo arrive on a Earth Colony in the 25th Century, where a ruthless mining company are using a dinosaur-like creature to force the colonists to leave the planet. Where the Doctor and Jo learn that The Master is on the planet and is in search of a doomsday weapon that is hidden somewhere on the planet.
Serie: Doctor Who
Episode Title: Colony in Space, Episode One
Air Date: 1971-04-10