Doctor Who
The Keys of Marinus (The Keys of Marinus, Part Six)
Season 1, Episode 26 · Aired 1964-05-16
Synopsis
The TARDIS arrives on the planet Marinus on an island of glass surrounded by a sea of acid. The travellers are forced by the elderly Arbitan to retrieve four of the five operating keys to a machine called the Conscience of Marinus, of which he is the keeper. These have been hidden in different locations around the planet to prevent them falling into the hands of the evil Yartek and his Voord warriors, who plan to seize the machine and use its originally benevolent mind-influencing power for their own sinister purposes.
In the series
This episode is part of Doctor Who (1963–) on BBC.
A time-traveling renegade in a police box — regeneration as infinite franchise life.
Key cast
- William Hartnell as The First Doctor
- Patrick Troughton as The Second Doctor
- Jon Pertwee as The Third Doctor
Also in season 1
- S01E01 An Unearthly Child (An Unearthly Child, Part One)
- S01E02 The Cave of Skulls (An Unearthly Child, Part Two)
- S01E03 The Forest of Fear (An Unearthly Child, Part Three)
- S01E04 The Firemaker (An Unearthly Child, Part Four)
- S01E05 The Dead Planet (The Daleks, Part One)
- S01E06 The Survivors (The Daleks, Part Two)