When a mysterious predator eats a shark, experts wonder if a prehistoric monster is to blame a sinister sight is caught on tape near Russia's Area 51 and the evidence might point to a cover-up.
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Farmer Edwin Fuhr is harvesting crops when he spots a stainless steel metal object hovering in his field. Suddenly, four identical objects appear, but could aliens be to blame?
A fire-breathing crater burns in the middle of a desert, and some suspect it is a gateway to hell. Also, a deadly shark is found lurking in a golf course water hazard. A giant white blob threatens a town in California.
An explorer searching for treasure at a Mayan sacrificial site is attacked by a mysterious underwater fog thousands of fish spontaneously jump to their deaths something alien appears over the skies of Los Angeles.
Satellites reveal a series of strange pits in central China. What are they and what is their connection to some of the most pivotal events in the country's history?
Florida's vast Everglades have been invaded by up to 300,000 giant pythons. A group of military veterans are battling to rid paradise of these monsters.
When a mysterious predator eats a shark, experts wonder if a prehistoric monster is to blame a sinister sight is caught on tape near Russia's Area 51 and the evidence might point to a cover-up.
A giant creature in an armor of ice is spotted in the Alaskan wild, and some suspect it's a deadly mythical monster a jet has a close encounter with an unknown object evidence of a deadly lightning strike invites paranormal explanations.
It's early evening in rural Pennsylvania when several dozen witnesses report seeing a fiery object falling through the sky and landing in the nearby woods.
Two cousins, Billy and John Smith, are driving in separate cars when they encounter a massive 'mothership' three times the size of a football stadium.
Explore the mystery of the stone giant and the vanishing desert kingdom, and nukes and spooks in the Middle East. Plus, Harry Potter's Hedwig reveals her dark side.
On the East Coast of Canada, a small community is devastated by an earth-shattering ‘boom' that leaves scientists scratching their heads. A paranormal fog haunts Lake Michigan and seems to alter the very fabric of time.
While hiking in a New York state park, a woman has a terrifying encounter with a mysterious human-shaped shadow she believes is an entity from another world.
In this episode, Craig and Sarah take a closer look at a case that took place in November 2018 off the west coast of Ireland in which pilots saw bizarre lights through their cockpit windows. This programme contains some flashing images.
Stored in the archives of the Congregation of the Sacred Hearts of Jesus and Mary in Rome is a strange wooden tablet about 12 inches long, eight inches wide and an inch thick. It's known as the Mamari Tablet.
In a museum in Southwark, south London, is a strange brown felt object. It stands about eight inches high and is covered in 88 teeth… human teeth. It is believed to be nearly 200 years old and comes from the collection of an eccentric Victorian.
Experts scrutinise the engineering behind the Egyptians' Sphinx and pyramids. Could this advanced civilisation have received extra-terrestrial help?
Could history's most powerful men know more about extra-terrestrials than us? Experts explore the complex relationship between presidents and aliens.
An Australian rancher goes to check out what is frightening his herd, when he spots a large object hovering above a large water tank, which then speeds off into the distance.
Part Two expands the mystery, exploring the aftermath of the encounter. Parker and Hickson were tested for radiation at Keesler Air Force Base, their accounts scrutinised yet inexplicably consistent.
A secret underground military research station in the middle of the Greenland Ice Sheet is revealed as one of the most elaborate cover stories in the history of the Cold War.
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