Ep 13. The Sea Devils: Episode 5

The Sea Devils: Episode 5 is the thirteenth and final episode of the ninth season of the popular British science fiction television show, Classic Doctor Who. In this episode, the Doctor and his companion, Jo Grant, find themselves facing their deadliest threat yet as they come face-to-face with the Sea Devils, a race of reptilian creatures who have risen from the depths of the ocean to take over the world.

As the episode begins, the Doctor and Jo are on board a naval vessel that has been sent to investigate a mysterious island in the middle of the ocean. Their investigation leads them to discover that the island is actually the home base of the Sea Devils, who have been using it as a launching pad for their attack on the world above.

With the help of the navy, the Doctor and Jo launch a daring attack on the Sea Devils' island, but soon find themselves outnumbered and outgunned. As the Sea Devils begin to take over the naval vessel, the Doctor and Jo are forced to flee to the safety of a nearby lighthouse, where they hatch a plan to defeat the Sea Devils once and for all.

As they work together to devise a plan, the Doctor and Jo face constant danger from the Sea Devils, who are determined to destroy them and take over the world. But with courage and determination, the Doctor and Jo manage to outsmart the Sea Devils and foil their plans for world domination.

In the end, the Doctor and Jo manage to escape from the island and return to their normal lives, knowing that they have saved the world from a terrible fate. This thrilling finale to the ninth season of Classic Doctor Who is sure to leave fans on the edge of their seats until the very end.