The Fifth Doctor, Tegan and Turlough arrive on Sea Base 4, a nuclear warhead station under the sea that has some very nasty neighbours.
Cast
Peter Davison (Acting)
Janet Fielding (Acting)
Mark Strickson (Acting)
Tom Adams (Acting)
Ian McCulloch (Acting)
Ingrid Pitt (Acting)
Nitza Shaul (Acting)
James Coombes (Acting)
Norman Comer (Acting)
Tai Ling (Acting)
15 November 1980
13 April 2023
13 September 2017
24 November 1993
30 November 2022
30 September 2022
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9 September 1998
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3 October 2024
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28 April 2022
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27 October 2022
4 September 1975
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13 January 1984