An exploitative businessman is compelled to change his ways after he is bewildered by Joe 90's multitude of brain patterns.

When aircraft are shot down during live broadcasts of a hit song, International Rescue suspects foul play. Tin-Tin and Lady Penelope (posing as the singer Wanda Lamour) investigate, but are left in mortal danger when a ski lift is sabotaged and speeds out of control down a mammoth mountain slide in the Alps.

In Malta, Harry gets involved with an Arkansas millionairess, her pet dog, and a piece of microfilm.

Torchy and Squish go in search of cardboard to repair the rocket, and they discover the Ting-a-Ling bird, who suggests that they dig at the base of a pepper tree. Although the bird's hunch was wrong, Pom-Pom is overjoyed to find a puddle of chocolate.

The Mysterons threaten to obliterate the entire Atlantic Seaboard of North America.

Small-time crooks are turning up dead on the streets of Demeter City and a search begins for the prime suspect Mas Maharg, spotted at the scene of the second murder by Romek's new partner Morgan. Then Fredo's daughter Estes is taken ill and Brogan realises that she has been picking up the killer's thoughts with her paramental eye.

Straker is attracted to a reporter who poses a possible security leak for SHADO.

Captain Scarlet is guarding a particle collider at the Laroux Foundation in Louisiana. When a container tank is hit it releases a gaseous substance with special properties, which the Mysterons use to create an exact copy of Captain Scarlet. After disposing of the real Scarlet, the clone makes his way back to Cloudbase, intent on killing Colonel White. Later, it sets about destroying Skybase and Houston.

Spyros the bandit tries to keep Supercar from discovering his submerged secret.

A medicine man arrives in town claiming to have a cure for everything and almost puts Doc Haggerty out of business before it is discovered where the true source of the medicine comes from.