Searching for the lost world of Atlantis, Prof. Aitken, his son Charles and Greg Collinson are betrayed by the crew of their expedition's ship, attracted by the fabulous treasures of Atlantis. The diving bell disabled, a deep sea monster attacks the boat. They are all dragged to the bottom of the sea where they meet the inhabitants of the lost continent, an advanced alien race that makes sailors their slaves.

While on vacation, a woman's husband is taken by the Russian government. After one attempt fails, she begins looking for a suitable spy to capture and trade in exchange for her husband, but she develops an attraction to the one she thinks is a good candidate.

Two youngsters declare to their parents that they want to get married. Not sometime in the future but as soon as possible.

The english villages are under siege by Viking invaders, leaving destruction and fear in their wake.

Jim Hawkins discovers a treasure map and embarks on a journey to find the treasure, but pirates led by Long John Silver have plans to take the treasure for themselves by way of mutiny.

Medieval Mystery Cycle first performed in Chester in the 14th century.