"I'm going to try to prevent you humans from destroying yourselves!"

The Threat from Beneath - Episode 2

International tensions escalate and suspicion in Whitehall leads the Western World ever closer to war with the Soviet Union. The Doctor fails to convince the authorities that it is aliens responsible for the satellites that were destroyed, not Russian missiles. Desperate to prevent mankind from wiping itself out, the Doctor begins his own investigations, starting with a visit to Jodrell Bank. Sure enough, something from space came down in the Pacific Ocean last night. With help from the Time Lords, the Doctor points the TARDIS at precisely the correct location on the ocean bed, where he makes a shocking discovery...