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...
Made in GB
8.4/10
1973
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Cast
Jon Pertwee
As The Doctor
Katy Manning
As Jo Grant
Nicholas Courtney
As Brigadier Lethbridge-Stewart
John Levene
As Sergeant Benton
Richard Franklin
As Captain Mike Yates
Stewart Bevan
As Cliff Jones
Jerome Willis
As Stevens
Tony Adams
As Elgin
Ben Howard
As Hinks
Mostyn Evans
As Dai Evans
Talfryn Thomas
As Dave
Roy Evans
As Bert
Mitzi McKenzie
As Nancy
Ray Handy
As Milkman
John Scott Martin
As Hughes
John Rolfe
As Fell
John Dearth
As BOSS (voice)
Richard Beale
As Minister of Ecology
Jean Burgess
As Cleaner
Brian Justice
As Yates' Guard
Terry Walsh
As Guard
Roy Skelton
As James
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