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Season 4, Episode 1

Dracula's Tomb

Strange mounds in Transylvania might pinpoint the location of the tomb of the bloodthirsty tyrant believed to have inspired Dracula. A mysterious ancient city is discovered on a coral reef. Images of a plane crash sets off a hunt for a drug lord.

Season 4, Episode 2

Hitler's Lost Gold

New evidence might finally reveal the hiding place of Hitler's lost billion-dollar gold train. A discovery of a long-lost settlement rewrites the history of the Vikings in North America. A blood red river in Siberia points to catastrophic pollution.

Season 4, Episode 3

Fountain of Youth Found?

A strange structure shaped like a giant shark might point the way to a lost civilization's Fountain of Youth. Then, a massive hurricane heads toward Florida, but something unexpected is in its eye, and bizarre marks across the eastern US leave experts baffled.

Season 4, Episode 4

Mafia Ghost Ship

A ghost ship with links to the mob suddenly appears on a California beach. Strange markings could be a coded message that reveals a plot to overthrow the Queen of England. A lake believed to have magical healing powers holds clues to life on Mars.

Season 4, Episode 5

Beasts of the Lost Jungle

A ghost town covered in a strange, white powder emerges from a lake in Argentina. When a lost jungle is discovered in Africa, scientists embark on a dangerous mission to explore it. A declassified CIA image uncovers a bizarre, giant Soviet weapon.

Season 4, Episode 6

Mystery of Fang Forest

A strange forest of razor-sharp stones could be home to an undiscovered Hobbit-like humanoid species. When a man-made island mysteriously appears off the US coast, grisly new evidence points to secret government experiments into psycho-chemical warfare.

Season 4, Episode 7

Village of the Damned

A forbidden island points to a strange South American town that locals claim was the home of Adolf Hitler. New data from NASA satellites might reveal a sunken lost continent in the Indian Ocean. A pit of bodies suggests fears of a zombie nightmare.

Season 4, Episode 9

Lost City of Goliath

A lost city near Jerusalem might have been the home of Goliath. Bizarre underwater formations may point to a top-secret US weapons testing facility. A strange sighting in the Arctic could be a lost Nazi relic -- or the icy remains of prehistoric monsters.

Season 4, Episode 10

Treasures of Valhalla

When experts investigate an ancient network of tunnels rumored to be the hiding place of lost royal treasure, they find evidence of human sacrifice for the Viking god Odin. An abandoned fortress in Siberia might shed new light on Genghis Khan.

Season 4, Episode 11

The Minotaur's Lair

A strange lake in Transylvania is the home of an abandoned village and a terrifying secret. When an labyrinth is discovered on an island once home to an ancient Greek civilization, experts investigate if it was the legendary home of the Minotaur.

Season 4, Episode 13

North Korea's Forbidden Islands

Man-made islands are spotted near a North Korean missile facility. When something unexpected is found in a remote desert, experts investigate a lost city of giants. A strange discovery in Siberia could reveal a secret mission to the center of the Earth.

Season 4, Episode 15

Curse of Medusa

Experts investigate a strange glowing lake reported to turn things into stone. A mysterious structure in Africa that resembles Stonehenge is said to be the resting place of a mythical giant. A dark conspiracy could be at work in the Australian outback.

Season 4, Episode 17

Hunting the Ark of the Covenant

New discoveries lead investigators to a crypt rumored to hold the Ark of the Covenant. When a great white shark is killed, experts suspect an mysterious ocean monster. Strange markings in the desert might be a tribute to an ancient spider god.

Season 4, Episode 18

Forbidden City of Inca Gold

Treasure hunters have searched for a lost Inca city of untold wealth for a century, but new technology might finally locate its riches. A strange mountain in Egypt sparks an investigation into Cleopatra's gems and the tomb of Alexander the Great.

Season 4, Episode 19

Ghost Ship of Hell Island

A ghost ship is found abandoned on a remote island that's home to one of the world's last uncontacted tribes. A strange labyrinth in Sicily might have a sinister connection to the Mafia. New evidence reveals a mysterious military compound in Russia.

Season 4, Episode 20

Mayan Armageddon: The New Evidence

New evidence might reveal how the Maya vanished. When scientists investigate an abandoned settlement, they discover traces of ritualistic drug binges from the ancient world. A mysterious symbol in the desert points to a sex cult of millionaires.

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