Doctor Who: The Mind of Evil (1970)
Professor 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 Master is responsible for the machine.
What could he possibly want from the criminals? And what connects him with an
impending World Peace Conference?
Description
Professor 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 Master is responsible for the machine.
What could he possibly want from the criminals? And what connects him with an
impending World Peace Conference?
