Episode 1
Scientist and explorer George Challenger learns from a dying colleague of a prehistoric world and organizes an expedition to find it.
Episode 2
Desperate to escape and more than a little greedy, Marguerite offers Veronica to a tribal chief in return for jewels and safe passage off the plateau for her group.
Episode 3
When Roxton is running from a tyrannosaur, the earth suddenly swallows him up; the party follows a river to an underground ocean.
Episode 4
Stung by a giant bee, Summerlee lies near death; Challenger seeks a way to repel an attack by the ape-men.
Episode 5
In order to free Challenger from her tribe, the team must retrieve the bones of a warrior queen's husband.
Episode 6
Christecs brand Summerlee a devil after he revives a drowning child.
Episode 7
A vampire bite elevates Roxton's hunting instincts to a bloodthirsty level; a smitten native will fight Malone to the death for Veronica.
Episode 8
Druids worship Marguerite, who bears the mark of an ancient prophet; Veronica and Summerlee find a baby.
Episode 9
A search for Veronica's parents leads to a paradise guarded by prehistoric creatures and filled with beautiful, talented immortals.
Episode 10
Roxton, Challenger and Summerlee bring badly injured Malone to a magic healer in order to save his life.
Episode 11
Challenger, Malone and Marguerite find a subterranean civilization after being trapped in an abandoned mine.
Episode 12
Roxton changes the lives of the Tintas when he kills a warrior from the Hikari tribe; a World War I flying ace crashes in the jungle and takes Marguerite, Malone and Summerlee as prisoners.
Episode 13
The adventurers come upon the ruins of a civilization destroyed by an enormous explosion.
Episode 14
After slapping a young king, Marguerite must choose between instant death or marrying the boy.
Episode 15
Challenger meets up with a former scientific rival; an old witch may have the key to an escape from the Lost World.
Episode 16
Travelers from the future arrive in the Lost World to manipulate history.
Episode 17
Veronica reunites with her father; the team must fight Kartas, a bounty hunter after Veronica's father.
Episode 18
Ramses, a vivified mummy, enlists Marguerite, Challenger and Malone to help him regain the Egyptian throne; a grieving dinosaur targets Summerlee.
Episode 19
A dying Roxton makes an evil pact to regain his life and save Marguerite.
Episode 21
A gypsy fortuneteller's visions eerily come true, leaving the band to fear for Malone's life.
Episode 20
Roxton promises a teen's dying mentor to help the boy fulfill his destiny as savior of his people.
Episode 22
Drakul and the Raiders shoot down the adventurers' balloon, beginning a game of cat and mouse.
