Episode 5
Series Episode Number: 262World Premiere: Sat 28 Feb 1970 - 5:16pm BST [BBC One] (United Kingdom)
First Broadcast: Tue 3 Feb 1976 - 10:00pm CST [WTTW 11 Chicago]
Running Time: 23 minutes 58 seconds
7.50 Million (UK)
Appreciation Index: 58 (UK)Chart Position: 52 () (UK)
Recorded on Mon 12 Jan 1970 in Television Centre 1
Archive State: PAL Restor
When the Silurian leader is killed, all hopes of peace are lost. The Silurians infect Major Baker with a virus deadly to humans and release him to spread the infection.
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