Roxton, Marguerite, Challenger and Malone are marked after touching an amulet, convincing them to return it to the cave.

When the explorers enter an ancient temple, they release supernatural forces which threaten to destroy them.

While Roxton, Malone and Challenger are looking for a way off the plateau, Amazon women save them from an attack by a flock of pterodactyls.

The friends emerge from battle to find that one of their number is lost, and goons have enslaved a village.

An ancient map outlines an escape route; now the adventurers must prove to skeptics all they have seen.

Aliens capture Veronica and Malone, forcing them to work in the mines alongside androids that have developed humanlike emotions and individuality.

When Marguerite and Roxton kiss, the earth moves, and the explorers are launched on a wild treasure hunt.

Marguerite recognizes as a trophy hunter a man who claims to be part of a Zoological Society rescue party.

Roxton and Marguerite are jailed, accused of robbery after walking through a brilliant light on the far side.

A plane full of 21st-century tourists crashes in the jungle, bringing with it dreams of rescue.

Roxton saves a young woman and steps right into Balar's trap.

A woman who has saved the band from thirsty raptors will die if she cannot return immediately to the cave of the fountain of youth.

Challenger, Marguerite and Veronica follow hunters tracks through gas defenses, looking for Challenger.

Alex, a kobold, takes Roxton, Malone and Veronica prisoner; Holt is constructing a uranium generator to allow the kobolds to live above ground.

During a thunderstorm visions of Summerlee, their lost colleague, lead the friends to the brink of destruction.

An escape route opens to the expedition when an airship lands on the plateau, but the mysterious pilot has other plans.

At a haunted castle, the adventurers seem compelled to re-enact a romantic story of intrigue -- one that could end in death.

Dinosaurs are behaving oddly, but the crew knows something is really wrong when Marguerite is nice to everyone.

Captured by lizard men, Malone, Marguerite and Roxton are forced to fight as gladiators in the arena.

Danielle crafts a voodoo doll of Roxton, putting him in her control.

Werewolves make life a nightmare in the treehouse; Challenger faces a scientific challenge when Malone turns beastly.

Veronica unwittingly releases a savage giant from captivity, and Marguerite and the others must use all their talents to subdue him.