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.
Made in GB
5.9/10
1964
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Cast
William Hartnell
As The Doctor
Carole Ann Ford
As Susan Foreman
Jacqueline Hill
As Barbara Wright
William Russell
As Ian Chesterton
George Coulouris
As Arbitan
Martin Cort
As Voord / Warrior / Ice Soldier / Aydan
Peter Stenson
As Voord / Ice Soldier / Second Judge
Gordon Wales
As Voord
Robin Phillips
As Altos
Katherine Schofield
As Sabetha
Heron Carvic
As Voice of Morpho (voice)
Edmund Warwick
As Darrius
Francis de Wolff
As Vasor
Michael Allaby
As Ice Soldier / Larn
Alan James
As Ice Soldier / First Judge / Guard
Anthony Verner
As Ice Soldier
Henley Thomas
As Tarron
Raf De La Torre
As Senior Judge
Fiona Walker
As Kala
Donald Pickering
As Eyesen
Stephen Dartnell
As Yartek
Dougie Dean
As Eprin (uncredited)
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