Bigfoot researchers believe that bigfoot could potentially be from space.

In Missouri's Ozarks, a mysterious flying monster forces Don and Danny Overton off the road, nearly killing them.

In 1973, two shipyard workers, Charles Hickson and Calvin Parker Jr., revealed their harrowing ordeal to local police. A secret audio recording brings their claims to life as never before.

In the vast wilderness of California's Sierra Mountains, legend has it that a vicious Bigfoot War took place centuries ago. A group of researchers stumbles upon evidence of a Bigfoot encounter while out in the wilderness.

Bret has been plagued by alien abductions and horrific experiments since childhood.

For Dover High School students Abby Brabham, John Baxter, and Bill Bartlett, two nights in the spring of 1977 were ones they will never forget. Their encounter with a demon threw the small town of Dover into a frenzy of fear.

In the summer of 1969, the Lake Worth community was stalked by an aggressive hybrid monster, half-man half goat.

While hunting, Jason and his Buddy make an unexpected kill: a Sasquatch.

Two boys have come across mutant mellon heads in the backwoods in the midwest.

Did these women just witness a man commit suicide? Or a vampire in the night?

In a tiny town in the southwest corner of Arkansas, Heather Owen and Doyle Holmes each have a terrifying encounter with a huge beast on two legs covered in long dark hair - The Fouke Monster.

This small town in Louisiana began seeing sightings of a large shaggy beast named "Momo."

On a road trip through Brownsville Texas, a young couple, Barb and Cameron Dexter, experienced the walking dead first hand when they unknowingly parked their truck on a historic battleground.

While hunting with his son, Doyle Holmes encoutners the Fouke Monster, an enigma of the Ozarks.

For generations, Louisiana swampland natives have passed down stories of the sinister creatures it hides.

On a weekend hunting trip, Dakota Cheeks and his best friend, Ricky Joyce become the prey when they encounter one of Kentucky?s legendary beasts-- Sheepsquatch.

Two harbor patrolmen encounter the Men in Black after witnessing UFO activity one night in Puget Sound, Washington.

Twin sisters Audrey and Debbie Hewins were plagued by alien visitors since childhood. As adults, these abductions took a terrifying turn. The twins realized they were being used as the alien's reproductive slaves.

For Dover High School students Abby Brabham, John Baxter, and Bill Bartlett, two nights in the spring of 1977 were ones they will never forget. Their encounter with a demon threw the small town of Dover into a frenzy of fear.

Along Route 666, a remote stretch of road twisting through the Badlands from Colorado through New Mexico and Arizona, an unsuspecting truck driver has a terrifying encounter with a demon trucker.

The Superstition Mountains, just outside of Phoenix, Arizona, have long been a source of legend and mystery. Many who are lured there in search of hidden gold succumb to the curse of the Lost Dutchman.

In a tiny town in the southwest corner of Arkansas, Heather Owen and Doyle Holmes each have a terrifying encounter with a huge beast on two legs covered in long dark hair - The Fouke Monster.

This small town in Louisiana began seeing sightings of a large shaggy beast named "Momo."

While hunting with his son, Doyle Holmes encoutners the Fouke Monster, an enigma of the Ozarks.

This creature is thought to be half man, half bat.

This Cajun Boogeyman is an ape-like humanoid that dwells along the Sabine River.

An apalling mixture of mutt and man, the Shenango Dog Boy has terrified the Pennsylvania farming community for decades.

All was going well for Derek Randles and his friend during a camping trip, until they were attacked by Sasquatch.

Jim Manley and his wife were having a typical afternoon out on Lake Flathead, when all of a sudden a monster came out of the water.

While hunting, Jason and his Buddy make an unexpected kill: a Sasquatch.

On a quiet, cold night in Wisconsin, sanitation worker Steve Krueger encounters a wolf-like beast while clearing the roads of deer carcasses.

In the vast wilderness of California's Sierra Mountains, legend has it that a vicious Bigfoot War took place centuries ago. A group of researchers stumbles upon evidence of a Bigfoot encounter while out in the wilderness.