1Peril of the Reptilian
A genetically engineered reptile man, built by the army as the ""ultimate weapon,"" goes out of control and Dr. Quest and the team are called in to stop it.
2Nightmares of Steel
A shiek is attacked by desert outlaws riding robotic camels that are impervious to harm and possess killer weaponry.
3Aliens Among Us
A UFO attacks the site of Dr. Quest's current project, and Jonny and Hadji are kidnapped to force him to turn over his information. But Race and Quest suspect the aliens aren't all that they seem.
4Deadly Junket
Dr. Zin returns, and kidnaps a rocket specialist to get his hands on Dr. Quest's current project. The specialist's daughter Jessie escapes and goes to the Quests for help.
5Forty Fathoms Into Yesterday
The Quest team go on a salvage operation to recover a World War II German submarine that mysteriously disappeared in 1945, but find a time machine on board that sweeps them back to 1945 and leave them no apparent way to return.
6Vikong Lives
The Quests uncover a frozen creature, an orange-furred Viking guardian ape that they name Vikong ('Viking' + 'King Kong'). The creature is friendly, but the local villagers and greedy land developers are not, and the Quests help protect the creature.
7The Monolith Man
The Quest team investigates when an oil-drilling operation uncovers a passageway to the center of the Earth. They go through and meet Hardrock, a creature of living rock, who joins their team.
8Secret of the Clay Warriors
The team travel to Tibet to investigate the disappearance of a scientist reputed to have fallen victim to clay warrior guardians angered by his disturbing their burial grounds.
9Warlord of the Sky
A mad scientist creates a cloud-vehicle that can intercept any plane - the Quests must stop him.
10The Scourge of Skyborg
A rivalry of sorts develops between Race and Dr. Quest when the latter builds a computer pilot and Race believes nothing can outfly a human. But during a test flight Race is kidnapped by a former rival from his past, a man badly injured and using robotics to replace his missing body parts (thus the name ""Skyborg""). Skyborg is out to steal Quest's computer guidance system on behalf of the foreign power that gave him his parts.
11Temple of Gloom
Delegates at a peace conference in India are plagued by hallucinations that set them against each other. Dr. Quest is called in to act as mediator while the others seek out Hadji's old mentor, only to find he's been kidnapped and his mental powers used to disrupt the conference.
12Creeping Unknown
A plant creature is responsible for the disappearance of a number of people in a nearby woods, and the Quests must deal with it before it spreads. Unfortunately they discover that the creature converts its victims into similar plant-creatures and soon an army of the vegetoids starts marching forth.
13Skullduggery
Dr. Quest comes to a London museum to determine the origins of an ancient crystal skull, and runs afoul of a group of Druids intent on unleashing its mystic powers.