Doctor Who: The Keys of Marinus

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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.

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Cast

William Hartnell actor

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Carole Ann Ford actor Jacqueline Hill actor William Russell actor

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George Coulouris actor

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Martin Cort actor

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Peter Stenson actor

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Gordon Wales actor Robin Phillips actor

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Katherine Schofield actor Heron Carvic actor

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Edmund Warwick actor

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Francis de Wolff actor

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Michael Allaby actor

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Alan James actor

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Anthony Verner actor

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Henley Thomas actor

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Raf De La Torre actor Fiona Walker actor Donald Pickering actor