

The Doctor unearths a frozen nightmare — and someone's already turned up the thermostat.
Aided by his two assistants Jamie and Victoria, the Doctor lands the TARDIS on Telos, last resting place of the infamous Cybermen. There he discovers a band of archaelogists on a secret expedition to unearth the reason for his old enemies' extinction. In the underground shadowy depths, they find the icy tomb. A whole army in hibernation. A threat to no one, if the temperature remains low. But if the traitor in their midst gets his way, things could really heat up.
Acting
Patrick Troughton's mischievous, brooding Second Doctor.
Production
Atmospheric tomb sets that still feel genuinely claustrophobic.
Practical Effects
Creaky, terrifying Cybermen costumes — impractical perfection.
Director
Morris Barry
Trivia, insights & behind the scenes
This serial was believed lost for decades until a complete copy miraculously surfaced in Hong Kong in 1991.
The Cybermen's redesign here established their iconic 'handlebar' head look that influenced fifty years of redesigns.
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