Dr. Quest races to retrieve a missile ahead of an enemy submarine.

When an archaelogist steals from an Egyptian tomb, the mummy rises to take revenge.

Dr. Quest tries to rescue a scientist from a tribal sacrifice.

The Quests explores the ruins of Mayan civilization and are threatened by graverobbers.

The group recalls Hadja's first encounter with the Quests.

Zin uses an old trick to get his spidery robot spy into Dr. Quest's compound.

Zin replaces Race with a ringer while Quest searches Thailand for a rare plant.

The Quests make an emergency landing in the Andeas where a German World War I ex-fighter pilot wants to take on and kill Race in an aerial dogfight.

When Jonny finds a treasure-filled underseas shipwreck, the Quest ship is hijacked.

The Quests investigate voodoo on a small island.

Race and the boys crash-land in a jungle, where they have trouble with the local pygmies.

The group investigates an island being terrorized by man-eating lizards.

The Quests stumble across a mine manned by enslaved workers overseen by a crippled owner and his trained pterodactyl.

Quest unwittingly uses his new fire-extinguishing bomb on Zin's volcano.

Gold-smugglers try to scare Quest away from his nearby research site by using rumors of werewolves.

Dr. Quest's new submarine is stolen by foreign agents.

The kids and Bandit are shiprwrecked and adopted by apes.

An accident in a lab creates a destructive creature made of pure energy.

The group discovers a Nazi running a tribe of cavemen in Africa.

The Quest group discovers the source of a swamp's pollution - a hidden missile factory.

The Quests help a scientist whose valuable formula is being sought by enemy agents.

Dr. Quest is kidnapped by a scientist who has developed a method for creating monstrous animals.

A Yeti terrorizes a Tibetan village when he appears in a nearby palace.

The Quests and their friends becomes trapped on an abandoned freighter with a sea monster.

The Quests discover that Dr. Zin is developing a gold-making process in an Indian mine.