A voodoo priest is causing a zombie uprising.
The Quests visit an old colleague, a renowned biologist who became an insane breeder of vicious monster lizards.
Dr. Quest heads to the land of the Turu in the Amazon in pursuit of high-grade trinoxite, a new metal essential to the space program, not knowing that Turu is a live pteranodon guarding the deposit.
Dr. Quest is interested in the behavior of a volcano, not knowing that it's Dr. Zin's project.
In the Canadian woodlands, the Quests find French-Canadian smugglers as well as a Native American guardian.
Foreign agents hijack Dr Quest's new Underwater Prober, taking Race, Jonny and Bandit prisoner.
A shipboard fire leaves Jonny, Hadji and Dr. Quest stranded on a desert island.
The Quest party helps a fellow scientist stop an energy form they accidentally created.
Dr. Quest and his team find more than they bargained for when they go in search of a downed weather balloon.
Someone goes to great lengths to keep activities in the Quetong Swamp Lake area private; Dr. Quest gets involved when asked to determine why local fish are suddenly starting to make area fishermen sick.
Jonny and his father head to Norway, where another scientist's invention is in demand.
A mad scientist kidnaps Dr. Quest in Hong Kong.
Dr. Quest's surprise visit to his friend Raj Guru in the high Himalayas of Nepal coincides with a storm that drives the yeti from the mountain into the old palace nearby, or so it would seem.
The Quests land themselves in the middle of a seafarer's fantastic and nightmarish dilemma.