Last updated 24 March 2024

Episode 1

Series Episode Number: 145

World Premiere: Sat 14 Jan 1967 - 5:49pm GMT [BBC One] (United Kingdom)
Running Time: 24 minutes 18 seconds

8.30 Million (UK)

Appreciation Index: 48 (UK)

Chart Position: 43 () (UK)

Recorded on Fri 14 Jan 1966 in Riverside 1
Archive State: Missing

The travellers find themselves deep below the Earth's surface, in the lost city of Atlantis. The Doctor meets the mad Professor Zaroff and Polly is to be turned into a fish person.