7.2
1971-03-06
Professor Emil Keller has created a machine that can pacify even the most dangerous of criminals. But when the Doctor and Jo arrive at Stangmoor Prison for a demonstration, things start to go horribly wrong - especially when they discover that the Doctor's old enemy the Master is responsible for the machine.
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Released
1971-03-06
Runtime
150
Director
Timothy Combe
Budget
$0
Revenue
$0
Genres
Science Fiction
Drama
Adventure
Language
English
Production
BBC