The adventurers discover they have lost Summerlee and have to withstand attacks from both humans and monsters. Tribune saves Roxton from the waterfall.

Roxton, Malone and Challenger help an Amazon woman attacked by a Raptor. Challenger gets injured and the Amazon tribe repay the adventurer by healing him, but have other things in mind for the men.

Challenger has made a windmill to produce electricity, a storm brews and ball lightning creates a portal that allows a helicopter with engine trouble to come through from the year 2000. This brings up the question of time travel once more.

Our adventurers end up in a haunted castle with secret passages, cobwebs and all. After some strange circumstances, they feel compelled to re-enact an intriguing murder/mystery which eventually leaves their fate in the hands of Challenger.

A horse with no rider approaches our adventurers. Roxton mounts it and gets taken to the clutches of an evil wizard who wants to use Roxton for evil doing.

An alien skeleton army takes over the bodies of Marguerite and other life forms in the jungle.

Malone's dream of successfully returning to his wonderful life and beautiful fiance in London, appear to come true.

A mystery woman tells Veronica that her parents are alive. Veronica then unwittingly releases a savage giant from captivity. Marguerite and the others must then subdue him again.

Tribune asks for help when he is being hunted, but our heroes are captured by the Lizard Empress and sent to the Gladiators Arena.

During a drought, the explorers find a young woman, Anna, with the secret of eternal youth which Marguerite is very interested in - but is there a catch?

When some unscrupulous hunters come to the Lost World, Veronica is captured in order to become a freak show specimen.

A beautiful woman stranger, Danielle, with a powerful and deadly secret, manages to seduce Roxton.

Challenger is caught in a trap and freed by some children and then finds himself in trouble with their protector.

A stranger, Alex, appears from an expedition trying to find a source of the Amazon, and when Veronica and Marguerite fall for him, sparks begin to fly.

The explorers find another world after entering a cave, but do they have the misfortune to find a place even more dangerous than the Lost World?

Veronica and Malone are captured by slave masters, who are like nothing on Earth.

A mysterious amulet brings out our heroes animal instincts, and they learn all about animal magnetism.

The explorers release supernatural forces from a temple which threaten to destroy them.

Roxton and Marguerite discover some pirate's treasure that comes with a curse, this however does not put off Marguerite about keeping it at first, but other circumstances eventually change her mind.

Life in the tree-house gets difficult as werewolves make life a nightmare.

Our heroes are led to the edge of disaster by a visitor from the past.

An airship lands on the plateau and opens an escape route to the explorers.