Episode 7
Series Episode Number: 264World Premiere: Sat 14 Mar 1970 - 5:15pm BST [BBC One] (United Kingdom)
First Broadcast: Thu 2 Oct 2014 - 8:00pm EDT [Retro TV]
Running Time: 22 minutes 55 seconds
7.50 Million (UK)
Appreciation Index: 58 (UK)Chart Position: 54 () (UK)
Recorded on Mon 26 Jan 1970 in Television Centre 8
Archive State: PAL Restor
As the Silurian plague quickly spreads, the Doctor desperately searches for a cure. But the Silurians are aware of the Doctor's efforts and intend to stop him.
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