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.

The new crew of the Paradox intercept an Intergalactic Distress Call and trace it to the Dragon’s Planet where they find a dying old lady in a dilapidated house inside a huge plant pod. She asks them to grant her dying wish, but Captain Thrice discovers a plot laid by Dr. Agon to trap them all inside the pod!

While exploring an asteroid, the Alphans critically injure an alien trapped within. Bringing him to Alpha, he is declared dead. However, he recovers spontaneously and his wounds have completely healed. The indestructible Balor is a scientist whose people had discovered the secret of immortality. He explains that his people branded him a dissident as their society descended into malaise brought about by widespread deathlessness. He was imprisoned inside the asteroid and cast out. Actually Balor is a psychopath, offering a drastic solution to his people's apathy; now freed of the eternal prison, he plans to spend eternity practicing the art of pain and torture, with the Alphans as his subjects.

Captain Blue is drugged and wakes up three months later facing questioning from a man claiming to be from Spectrum Intelligence.

Grandpa Twink is a teller of tales and his buddies tease him about his supposed heroics. Twink redeems himself when he captures Indian Jack, a notorious renegade.

The Fireball XL5 crew is transfixed by a hypnotic sphere that has been hi-jacking space freighters.

A woman hires the Protectors when her son, who has become involved with a drug dealer in Spain, is framed and arrested by police.