Doctor Who: The Keys of Marinus (1964)

Science Fiction
Drama
Adventure

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.

Cast

Susan Foreman
Voice of Morpho (voice)
Ice Soldier / Larn
Ice Soldier / First Judge / Guard
Ice Soldier
Senior Judge
Barbara Wright
Eprin (uncredited)
Ian Chesterton
Voord / Warrior / Ice Soldier / Aydan
Voord / Ice Soldier / Second Judge

Crew

Script Editor
Associate Producer
Makeup & Hair
Costume Design