When Roxette and Tripp discover a bomb planted on the Fireflash, it's up to them to figure out a solution for safely landing the airliner. Will Tripp’s suggestion of dumping marbles on the runway prove to be more than a bad joke?

Tripp mistakes a major motion picture shoot for a real alien invasion. Jeff believes it to be a deliberate case of teenage hijinks, and continues to ignore the boy even when the film is sabotaged. Can Roxette persuade Mr. T to check out the scene and put an end to The Atrocimator's latest scheme?

A vacation to unearth the lost treasure beneath Lake Anasta goes horribly wrong for Brains and Tin-Tin. To make matters worse, Tripp is put under The Hood’s hypnotic powers, leaving both the expedition and Hacker Command out of action.

It's a tale of two Tripps, as an experiment to duplicate his favourite snack results in the young Hack Master being split into a duo of very distinct personalities.

Roxette finds herself in a double dose of trouble in various proportions; It's up to her to find a cure for a new growth chemical that increased a group of Alligators to great size, and solve the mystery of the incredible shrinking Tripp.

When Scott Tracy and a pair of far-out music lovers become caught up in an intergalactic terrorist business transaction, Roxette must find her true voice and save the world from a terrible fate.

Tripp's attempt to give S.A.L. an upgrade results in the program running wild, even refusing to help when Thunderbird 3 becomes trapped on a collision course with the Sun.

By wire-tapping Sky Control, The Hood is determined to sabotage the Red Arrow project with a psychological ELF wave. How will the Hack Masters save a nearby outpost if they can't stop fighting amongst themselves?

An April Fools' prank backfires on Tripp, as the Ocean Pioneer King is destroyed under his watch. How can the Hack Masters aid International Rescue's next mission? The fatal Fog has penetrated Hacker Command!

S.A.L. is on the blink again, causing a major communication blackout. How will Roxette and Tripp get in contact with Mr. Tracy to warn him the new Astro Rail he is riding has been sabotaged?

Tripp becomes distracted by kick boxing practice when he was supposed to be monitoring the Aqua Institute. The yacht carrying a major government dignitary is subsequently destroyed. Furious, Lady Penelope leads the investigation herself by going undercover.

Footage of an International Rescue mission is caught live and subsequently broadcast on television. Roxette and Tripp immediately become suspicious of how they missed the Photo Alert. They are proven correct upon discovering the voices are not those of the Tracy brothers.

It's party time down at the Mining Station, but Roxette and Tripp soon discover there is very little to party about. The Hood blows up offshore oil deposits, and the Tracy Family begin disappearing one-by-one!