Josh Gates journeys to the wilds of Namibia to embark on a treacherously deep dive in Lake Otjikoto for a long lost World War I treasure.

In 1949, priests were left terrified by a boy who claimed to be possessed by the devil. Investigators share shocking secrets about this chilling case.

After a potential new breakthrough, Josh returns to Guatemala, searching for a snake king tomb. Using new technology, he hopes to find the tomb's location.

The team travels to East Texas to investigate thermal footage that may show a Bigfoot spying on a campsite. But is it just a mistaken case of identity?

Joe Donovan, an avid skier and adventurer, has found the perfect spot for his permanent base camp on a remote ridge in southwest Montana.

Experts investigate reports of a secret alien base deep inside Alaska's highest mountain. Video evidence suggests extra-terrestrial activity in Fairbanks.

Experts examine whether an interdimensional portal in the Alaska Triangle led to the disappearance of an aeroplane carrying 44 military personnel in 1950.

A cryptozoologist investigates reports of a sea monster in Alaska. He reviews eyewitness accounts and examines never-before-seen video evidence.

In 2014, Malaysia Airlines flight MH370 vanished without a trace. Did it crash and if so, why can't the wreckage be found?

Atlantis is one of the most famous disappearances. After thousands of years, can state-of-the-art technology finally to crack this ancient mystery?

After a huge cargo ship suddenly vanishes with 27 crew members on board, new evidence suggests the culprit may be a mythical rogue wave.

Experts investigate reports of a secret alien base deep inside Alaska's highest mountain. Video evidence suggests extra-terrestrial activity in Fairbanks.

Don Wildman investigates a mathematically gifted horse, examines one of the first automobiles and unveils secrets of a mysterious underground corkscrew.

Don investigates the origins of China's terra cotta army, examines what a loving mother is capable of and uncovers the story of a Polish soldier bear.

Treasure hunters search for clues to a vast fortune they believe is hidden on Brazil's "Snake Island." But team tensions could derail the expedition.

The team gear up for their first venture onto Snake Island, where they'll face triple-digit heat and one of the world's deadliest vipers.

Why was Las Vegas a Nazi target for wartime sabotage, a test ground for Atomic Bombs, and a meeting place for 9/11's terrorists?

From the rallies held at Madison Square Garden, to the plots to steal the secrets to the nation's weapons of war, the American Nazis terrorised the USA in the 1930s.

The team travels to North Carolina to investigate a ferocious feline. They attempt to capture it inside of a complex wooden trap.

The Osbournes plunge deep into the paranormal sea to find proof that mermaids exist. Plus, have Ozzy and Sharon fallen victim to the Mandela Effect?

Four new team members join Jason, Steve, Dave and Shari on their investigation of the Mid-Orange Correctional Facility in Warwick, New York.

The team travels to Preston County to investigate a flying predator. They encounter great danger when they invade the creature's territory.

Experts investigate reports of a secret alien base deep inside Alaska's highest mountain. Video evidence suggests extra-terrestrial activity in Fairbanks.