Classic Who S21 • Serial 1 · (4 episodes)
Warriors of the Deep
Other variations of this story: Warriors of the Deep (BBC Audio Soundtrack)
Earth, 2084. Two global superpowers hover on the brink of war. When the TARDIS is forced to make an unplanned visit to Sea Base 4, the Fifth Doctor, Tegan and Turlough find themselves accused of being enemy agents. Quicky embroiled in a deadly game of paranoid intrigue, it becomes clear that others on the base have sabotage and murder in mind.
However, there is a greater threat to Mankind: the Silurians and Sea Devils, prehistoric reptiles seeking to reclaim the Earth. Can the Doctor prevent them implementing their 'final solution' and triggering a war that could wipe out the entire human race?
4 Episodes:
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…
Just as the Doctor gains a tentative trust from the humans, a Silurian battle cruiser approaches. The Doctor warns Commander Vorsha to hold his fire and find out what they want, but is the level-headed commander one who'll listen?
As Vorshak's crew are cut down by Sauvix's Sea Devil Warriors, the Doctor is running out of ways to broker a peace between the opposing species.
With Silurians in control of the base, Icthar reveals his plan for a final solution to Earth's human problem, which presents the Doctor a great moral dilemma.