Josh joins the hunt for a $2-million treasure. He tries to decode the clues to its location by following a cryptic poem, leading him into the Rocky Mountains.

In Peru, a tiny skeleton resists medical explanation. Is it a missing link in human evolution? Or proof of extra-terrestrial contact?

Discovers which of America's founding fathers used sex as an instrument of diplomacy and which one secretly scoffed at the divinity of Jesus.

As injuries pile up, the team push deeper into the Island in search of the Treasure of the Trinity, but a trail of clues leads to confrontation.

A dangerous run-in leads the team to an astounding new clue, but a communications breakdown leaves them in the dark about an approaching storm.

The team pushes deeper into Snake Island than ever, tempting fate with every step, and they make a discovery that will change their lives.

Could spaceships really be powered by atomic bombs? Plus, why was Neil Armstrong's transmission feed cut off when he spotted strange lights on the Moon?

Chris and Casey trek into the heart of Alaska to recover a lost plane that crashed whilst carrying two politicians onboard. Can they solve the 47-year-old mystery?

The brothers head to Virginia on a quest to find a long-lost Confederate treasury. They trek through unforgiving terrain to try to solve the mystery.

Chris and Casey hunt for a legendary silver mine worth millions of dollars. A cryptic journal leads them into the wilds of Kentucky - can they find the treasure?

The brothers trek through snow and relentless terrain in pursuit of a legendary Aztec treasure. What is rumoured to be hidden in the Utah mountains?

Chris and Casey Keefer travel to Ecuador in search of a colony of giants. They trek through the dense jungle, looking for clues leading to the lost civilisation.

Casey and Chris head to Florida in search of the loot of pirate Jose Gaspar. They leave no stone unturned as they hunt for the $30 million treasure.

Chris and Casey Keefer are in New York tracking down the lost fortune of Dutch Schultz. The brothers use Schultz's final words to guide them.

Deep in the Peruvian jungle, dozens of mummies have been found in cliffside tombs. Archaeologist Ramy Romany searches for evidence of who these people were.

An ancient spindle whorl suggests that Norse women led the Viking expedition to North America. Justin uncovers the untold story of America's origins.

In 2009, an Air France flight disappears, but could this tragedy happen again? After a huge area of Siberian forest is destroyed, it's a race to find the culprit.

A cryptozoologist hunts for scientific proof of Bigfoot in the remote Alaskan wilderness. Experts investigate a mysterious vortex of energy linked to disappearances.

The team finally uncover some major evidence which links their headquarters with the paranormal phenomena that they have been experiencing all over the county.

Jack and Katrina head to Skinwalker in Utah. They're investigating a rumoured haunted bed and breakfast, plus they look at paranormal activity in the area.

Jack Osbourne and Katrina Weidman head to Pennsylvania to investigate a 19th-century estate rumoured to be brimming with paranormal activity.

The team finally uncover some major evidence which links their headquarters with the paranormal phenomena that they have been experiencing all over the county.

Nick and Katrina are in the historic Jim Beam Distillery, exploring employee claims that bourbon is not the only spirit locked inside its huge warehouse.

An investigation into a shadow figure takes an emotional turn for Amy. Plus, a growling voice makes the team fear the ghost is more negative than they were led to believe.