Doctor Who: The Underwater Menace (1967)

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.

Genres: Science Fiction, Adventure, Drama

Stars: Patrick Troughton, Anneke Wills, Michael Craze, Frazer Hines, Joseph Fürst