When did Doctor Who Season 21 Episode 1 air?
Doctor Who Season 21 Episode 1 aired on January 5, 1984.


The adventures of The Doctor, a time-traveling humanoid alien known as a Time Lord. He explores the universe in his TARDIS, a sentient time-traveling spaceship. Its exterior appears as a blue British police box, which was a common sight in Britain in 1963 when the series first aired. Along with a succession of companions, The Doctor faces a variety of foes while working to save civilizations, help ordinary people, and right many wrongs.

Earth's ocean floor, 2084. With two superpowers poised on the brink of a devastating photonic war, a missile base comes under attack from the reptilian Sea Devils and Silurians, intent on eradicating the upstart human race and reclaiming the planet…
Direct answers for episode-level questions and details.
Doctor Who Season 21 Episode 1 aired on January 5, 1984.
This episode runs for approximately 25 minutes.
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