Dr. Quest travels to a Venetian mansion to authenticate the claims and machinery of paranormal scientists. The situation turns dire when the machine accidentally empowers a malevolent entity.
Dr. Zin launches the ultimate plan to defeat the Quests.
After the death of Dr. Zin, his two daughters are determined to carry on the Zin dynasty by destroying all the members of the Quest Team.
General Vostok returns with the weapon that defeated Napoleon and he wants Benton to make it bigger and more powerful.
On a visit to the Czech Republic, Jonny and Jessie encounter a ghostly apparition that leads them to an incomplete sonata -- and a generations-old secret.
Ezekiel Rage plants a nuclear bomb in the bowels of Earth and Jonny and Jessie must revert back into time to stop his evil deed.
Travelling to Indonesia to help an old friend recover a precious jewel, Race, Jonny and Jessie discover it is protected by a supernatural force.
While touring Bangalore, Jonny, Jessie and Hadji find a rare falcon, reputedly from a hidden realm that appears once every 500 years - a realm whose river's water is said to bestow immortality. A beautiful ornithologist is also very interested in the bird; but is she who she says she is?
Jonny and Benton venture into Jessie's mind to undo Surd's malicious attempt to strike at the Quest team from within - but it turns out that Jessie can take care of herself.
When Jonny and Jessie challenge each other to a Virtual Reality game in Questworld, Surd intervenes with a challenge of his own.
Scientists are working on transdimensional technology that will help them open a portal to another dimension - and its denizens, who waste no time staking their claim on Earth.
The Quest Team help a scientist harvest life-giving sap from trees that are being threatened by a logging operation in Cameroon.
In a father-son bonding trip in Devon, Benton and Jonny head to the big pond to fish but on the way, they come across an idyllic little village that's just a little too peaceful.
Air Force One vanishes with the president within it, and all the evidence points to Benton Quest and Race Bannon. Jonny, Jessie and Hadji must elude government agents to prove their fathers' innocence by finding the real culprit.
When Hadji rescues a beautiful girl in New Orleans, she exerts a strange influence over him.
Jonny and Hadji discovers a nearby biodome experiment is really a cover for a plant making uranium casted weapons when they visited Jonny's Grandpa, Doug Wildey on his ranch.
En route to Nova Scotia in the newly christened Questor II, Jonny, Jessie and Hadji come upon a fog-enveloped island with a tragic history.
During a simulation to test out a military installation's defences, a bio-computer is out of control.
The nefarious Dr. Zin subverts a satellite designed by Benton Quest and uses it to hold the world for ransom.
A seaquake releases a horde of murderous amphibians on a nearly-completed underwater research facility.
The insane Surd finds a way to switch bodies with Race and is ready to go on a rampage using his new identity. And now it is easier for him to kill Benton Quest (who can reverse the process).
The Quest team believes that the Canadian legend - Bigfoot is roaming in the Quest compound stealing electronic devices. They try to find out what is going on as hunters bag themselves an exotic trophy.
Race has to cross an obstacle course where he set the record for Special Forces recruits -- but there've been some modifications since he was last there.
A memory of Pasha sends Hadji to Calcutta to search for his real father to figure out the truth of his past.
Journeying to the Czech Republic to translate an artefact, which holds the key to controlling a Golen, the Quest Team bump into an ex-KGB operative who's determined to reactivate the Golem to overthrow the government.
During an expedition with Jessie's mother Estella, the Quest team discovers a plague that wiped out an ancient Inca-like tribe.
