The Sea Devils
“We have other colonies hidden round the world. We shall be the victors in the war against mankind!”
The Doctor and Jo visit The Master in his high-security prison on an island off the south coast of England and hear from the governor, Colonel Trenchard, that ships have been mysteriously disappearing at sea. Investigating, The Doctor learns from Captain Hart, commander of a nearby Naval base, that the sinkings have centred around an abandoned sea fort. He and Jo then visit the fort and are attacked by what one of the men there terms a Sea Devil – an amphibious breed of the prehistoric creatures encountered by The Doctor shortly after his exile to Earth.
Nothing could be further from the truth. The Master has in fact made contact with the Sea Devils, aquatic cousins of the prehistoric Silurian race encountered by The Doctor some time ago. Having slept beneath the sea for millions of years, the Sea Devils have awoken and intend to reclaim what they consider to be their planet. Aided and abetted by the evil Master, who will stop at nothing to take revenge on those who imprisoned him, the Sea Devils plan to eliminate the human race, a species they regard as nothing more than upstart apes…
Originally transmitted 26th February – 1st April 1972. Due to the archive nature of the material the picture and sound quality may vary occasionally – please do not adjust your set.