While investigating the disappearance of multiple ships in the Sargasso Sea, Dr. Quest discovers a secret laser base ...

A foreign submarine crew races Dr. Quest and his recovery team (aboard an American icebreaker) to a downed experiment...

A former archaeologist friend-turned Arab nationalist revolutionary named Ahmed Kareem, who is being stalked by a ven...

While going to the aid of a captive fellow scientist in the Amazon jungle, Dr. Quest is abducted (for ritual sacrific...

While investigating a bar of fake gold from a supposedly exhausted Indian mine, Dr. Quest discovers an alchemist coun...

While on an archaeological expedition to an ancient Mayan city in the Yucatán jungle, Dr. Quest is threatened by a gr...

While investigating a mysterious ailment in India, Dr. Quest discovers an underground nerve-gas factory (operated by ...

Dr. Zin sends a large, black, cyclopean, four-legged spider-like robot (by a flying saucer-like craft) to a U.S. gove...

An impostor disguised as Race is infiltrated into Dr. Quest's expedition to gather a rare pharmaceutical plant by Dr....

After an emergency landing in the Andes Mountains, Race is challenged to an aerial dogfight by Baron Heinrich von Fro...

In the Caribbean Sea, a new cook aboard the Quest research vessel betrays his employer to a gang of Mexican pirates (...

While researching marine biology in the Caribbean, Dr. Quest encounters a phony witch doctor, who is protecting a sec...

When the members of his team descend in a plane crash over uncharted jungle territory, Dr. Quest must rescue them (wi...

On a visit to Japan, Dr. Quest finds that an old biologist friend (having gone insane) is breeding over-sized carnivo...

While searching for a rare strategic mineral in the Amazon jungle, Dr. Quest and Race discover a prehistoric Pteranod...

While investigating unusual tremors on a tropical island in the South Pacific, Dr. Quest and Race uncover a secret ra...

While hunting for samples of petrified wood in the Canadian Rockies, Dr. Quest is threatened by a gang of lumberjacks...

The Quest home compound in Florida is attacked by foreign (submarine-borne) agents, intent on stealing a new undersea...

Jonny and Hadji are marooned (by shipwreck) on the jungle coast of the African continent, where they are adopted by a...

Dr. Quest responds to the distress signal from a fellow scientist, who has accidentally unleashed an (invisible) ener...

While doing atmospheric research in the African savanna, Dr. Quest uncovers an inaccessibly high plateau, populated b...

While investigating the contamination and mutation of marine life in China, Dr. Quest discovers a secret missile base...

On a visit to the castle residence of a fellow Norwegian scientist, Dr. Quest must help protect his colleague's lates...

Dr. Quest is kidnapped by a rival scientist who needs help with his experiments to develop gigantic (crab, spider, li...

During a trip to Nepal, a band of terrorists disguised as yetis attempt to overthrow the local spiritual/government l...

Responding to a maritime distress signal in the Java Sea (east of Indonesia), the Quest group is stranded aboard an a...