The TARDIS arrives on an extinct volcanic island. Before long, the travellers are captured and taken into the depths of the Earth, where they find a hidden civilisation — the lost city of Atlantis.
Patrick Troughton
The Doctor
Anneke Wills
Polly
Michael Craze
Ben Jackson
Frazer Hines
Jamie McCrimmon
Joseph Fürst
Zaroff
Colin Jeavons
Damon
Noel Johnson
King Thous
Tom Watson
Ramo
Peter Stephens
Lolem
Gerald Taylor
Damon's Assistant
Catherine Howe
Ara
P.G. Stephens
Sean
