Under the directives of the Black Guardian, sabotage by Turlough destabilizes the TARDIS, causing it to latch onto the nearest spaceship for physical support. Nyssa, trapped inside her dissolving room, crosses onto the other ship in order to survive, entering onto an eerily automated ship marked with painted skull decals just as it's being invading by raiders.
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An industrial dispute between the BBC and the electricians' union, resulted in a major reorganisation of shooting schedules. As a result, the crew had to work against the clock to complete the story. See more
Tegan, why do you dislike me so much?
You hardly know me.
Featured in When Worlds Collide