Warriors' Gate (4) Doctor Who : Season 18 Episode 20
TV-PG BBC Television 25m
Aired: January 24th, 1981 @ 5:15 PM EST on BBC Television
The Doctor deduces that the freighter is a slave ship loaded up with Tharils to be sold as time machine components, but the immense weight of Rorvik's damaged ship, designed to contain the Tharils, is now collapsing the fragile void of the micro-universe in which they're all stuck, pulling everything inside ever closer.
