Some experts claim that UFO wreckage is stored in a top-secret facility in Dayton, Ohio. Former employees spin a tale of alien bodies and flying saucer debris.

A team of field investigators uncover the clues that will recreate vanished or hidden worlds. They use the latest research, expert analysis and cutting-edge graphics technology to take us back.

Since the dawn of civilisation, humans have wondered how the universe was created. Religion offers a spiritual answer, but the latest discoveries in physics show evidence that the laws of physics by themselves led to the universe in which we live.

The US military has long claimed that the 1947 Roswell crash was a weather balloon, but FBI files released in 2011 include a memo regarding the recovery of not one, but three 'flying saucers'. Could the US government have UFOs in their possession?

Slave tunnels, gambling dens and opium runners: welcome to the dark, 100 year-old underworld history of Portland, Oregon, famous for being a city full of vice.

The WW2 Treasure Hunters are in Northern France looking for the remains of an RAF Fairey Battle bomber plane shot down during the days after Dunkirk.

Lue Elizondo previously identified five observable characteristics of UFOs, dubbed the 'five observables'. But there is a so-called sixth observable Elizondo began to investigate - an invisible threat these craft may pose.

ISIS funded its murderous regime by ripping loot out of the ground and selling it to the highest bidder. But will dealers, auction houses, museums and collectors acknowledge that their cash was directly funding murder and mayhem?

Some experts claim that UFO wreckage is stored in a top-secret facility in Dayton, Ohio. Former employees spin a tale of alien bodies and flying saucer debris.

A team of field investigators uncover the clues that will recreate vanished or hidden worlds. They use the latest research, expert analysis and cutting-edge graphics technology to take us back.

Since the dawn of civilisation, humans have wondered how the universe was created. Religion offers a spiritual answer, but the latest discoveries in physics show evidence that the laws of physics by themselves led to the universe in which we live.

The US military has long claimed that the 1947 Roswell crash was a weather balloon, but FBI files released in 2011 include a memo regarding the recovery of not one, but three 'flying saucers'. Could the US government have UFOs in their possession?

Slave tunnels, gambling dens and opium runners: welcome to the dark, 100 year-old underworld history of Portland, Oregon, famous for being a city full of vice.

The WW2 Treasure Hunters are in Northern France looking for the remains of an RAF Fairey Battle bomber plane shot down during the days after Dunkirk.

Lue Elizondo previously identified five observable characteristics of UFOs, dubbed the 'five observables'. But there is a so-called sixth observable Elizondo began to investigate - an invisible threat these craft may pose.

A mudslide that swallows an entire neighbourhood and leaves scientists baffled is investigated. Plus, could engineering be to blame for the deaths of more than 200,000 people in Haiti?

For centuries, this mysterious civilisation ruled a huge territory across South and Central America. But by 900 AD, it dramatically fell apart.

A secret serviceman for President Kennedy sheds light on a plot to assassinate JFK on the streets of Chicago, and a treasure hunter may have located Arizona's infamous Lost Dutchman Mine. Plus, could New England be a new Bigfoot hotspot?

In a manoeuvre of strategic brilliance, Moses leads his people out of Egypt and lures the Egyptian army to a watery grave.

The Vieira brothers track promising leads on the Goshen Mystery Tunnel site and on a giant skeleton found in 1849.

60BC. Over-powerful generals and money corrupt the Roman Republic. With Rome falling into and out of civil wars, Julius Caesar is to defy all rivals and laws to make himself dictator for life!

Host Josh Bernstein searches for the long-lost land of Ophir, home of King Solomon's vast treasures. But can he succeed where so many before him have failed?

Marty Lagina meets with researcher Kevin Dysktra who believes hes found a trail to a fortune in Confederate gold that may lie at the bottom of Lake Michigan.

A mudslide that swallows an entire neighbourhood and leaves scientists baffled is investigated. Plus, could engineering be to blame for the deaths of more than 200,000 people in Haiti?

For centuries, this mysterious civilisation ruled a huge territory across South and Central America. But by 900 AD, it dramatically fell apart.

A secret serviceman for President Kennedy sheds light on a plot to assassinate JFK on the streets of Chicago, and a treasure hunter may have located Arizona's infamous Lost Dutchman Mine. Plus, could New England be a new Bigfoot hotspot?

In a manoeuvre of strategic brilliance, Moses leads his people out of Egypt and lures the Egyptian army to a watery grave.

The Vieira brothers track promising leads on the Goshen Mystery Tunnel site and on a giant skeleton found in 1849.

60BC. Over-powerful generals and money corrupt the Roman Republic. With Rome falling into and out of civil wars, Julius Caesar is to defy all rivals and laws to make himself dictator for life!

Host Josh Bernstein searches for the long-lost land of Ophir, home of King Solomon's vast treasures. But can he succeed where so many before him have failed?

Marty Lagina meets with researcher Kevin Dysktra who believes hes found a trail to a fortune in Confederate gold that may lie at the bottom of Lake Michigan.

A mudslide that swallows an entire neighbourhood and leaves scientists baffled is investigated. Plus, could engineering be to blame for the deaths of more than 200,000 people in Haiti?