The Doctor and UNIT investigate a deadly infection lurking underneath the Welsh mining town of Llanfairfach. It's an adventure that will change Jo Grant's life forever...
The Doctor and UNIT investigate a deadly infection lurking underneath the Welsh mining town of Llanfairfach. It's an adventure that will change Jo Grant's life forever...
Jon Pertwee ,Katy Manning ,Nicholas Courtney
John Burrowes
BBC ,
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as The Doctor
as Jo Grant
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