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The Rani plans to transfer her time tunnel to the centre of the Earth's time meridian, and use her store of genetic codes and brain prints of every living creature to control evolution itself.
First Air Date : Nov 23, 1963
Last Air date : Dec 06, 1989
Episode : 694 Episode
Season : 26 Season
Runtime: 48 minutes
Studio: BBC One, BBC Television
Country: United Kingdom
Cast: Sylvester McCoy