As they travel deeper into the Nimon power complex, the Doctor and Romana start to suspect that there is a lot more to the Nimon than meets the eye and that they may be seeing the start of a invasion of the planet Skonnos.
Guest Cast
David Brierley
voices K-9
Clifford Norgate
voices Voice Of Nimon
Janet Ellis
as Teka
Cast Appearances
Episode Discussion
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