Full Circle (4) Doctor Who : Season 18 Episode 12
TV-PG BBC Television 25m
Aired: November 15th, 1980 @ 5:15 PM EST on BBC Television
Marshmen invade the Terradonian ship thanks to Romana, who seems to be in communion with them. While the ship's inhabitants flee for their lives, the Doctor discovers a crucial fact why these humanoids can never return to the planet Terradon.
