When a terrifying tower of fire is caught on camera, eyewitnesses fear an alien invasion, and using cutting-edge science, experts investigate the threat causing this nightmarish phenomenon—and if a cover-up is hiding the truth.

Experts investigate evidence of flying, fire-breathing creatures.

Footage of a fearsome wolf-like creature in the remote wilderness of northern Canada could be evidence of a dire wolf, a prehistoric beast that went extinct at the end of the last Ice Age; experts use cutting-edge tech to investigate if it has returned.

A bizarre explosion is captured that morphs into a sinister black ring of smoke above a California football stadium; experts investigate and uncover an underground network of Satanists with connections to a string of modern-day terrorist plots.

When footage of a strange deep-sea vessel is uncovered, experts wonder if its evidence of an autonomous alien craft sent to explore earth, and using cutting-edge tech, investigators follow the clues to an unexpected explanation.

When footage reveals a man's leg taking on a life of its own, it appears that something alien is trying to burst free; cutting-edge science investigates what explains this strange and sinister possession, and what it takes to exorcise the invader inside.

A bizarre, tentacled black mass emerges from the seas on an island in the Caribbean, and on-lookers are horrified as it writhes ashore; experts use cutting-edge tech to investigate the origin of this alien invader.

Doctors discover a mysterious parasitic species inside a man's nose.

When a bizarre, alien skeleton is found in an abandoned compound in the Himalayas, some speculate that it's the corpse of a newly-dead dinosaur, and using cutting-edge tech, experts investigate if it's evidence of a top-secret Jurassic Park.

Experts investigate how a boy can twist his head 180 degrees.

Experts investigate footage of an ape-like creature in Russia.

Two young men capture a demonic figure in the mountains of Jordan.

A young woman captures a doll that mysteriously comes to life inside a closet as she house sits alone in Dallas; experts investigate and reveal terrifying accounts of haunted dolls possessed by demonic souls.

A village mourner at an Indonesian funeral films a dead man's hand waving through the glass window of a coffin; experts investigate and uncover powerful local priests and the practice of black magic rituals to reanimate corpses back from the dead.

When something strange is recorded flying in Mexico, some wonder if it's a witch reputed to kidnap children, others believe it's evidence of a new way to smuggle drugs or top-secret technology; the latest science helps experts investigate the truth.

When a mysterious fog and a huge explosion strike at once, some suspect a napalm attack on American soil, but using cutting-edge tech, experts find that the truth could be more dangerous than ever imagined.

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In Egypt, a freakish animal is caught on camera, and using cutting-edge tech, experts investigate if this strange beast could explain the secrets of a satanic deity that was once believed to have been worshiped here.

Security guards encounter a door repeatedly opening and slamming shut.

When a massive plume of smoke suddenly erupts from the ground in Manhattan, experts investigate if this terrifying event is evidence of a volcano that's waking up beneath the streets of New York City—and if it's almost due to blow.

When a ghostly encounter in a cemetery is caught on camera, experts use cutting-edge tech and the latest science to investigate if something paranormal is at play.

When something strange is caught on camera in a tunnel beneath the Colombian jungle, experts wonder if it's a wormhole to far-off places in the cosmos, and using cutting-edge tech, they investigate if there's an interdimensional conspiracy at play.

On a Native American reservation in Utah, evidence of a man transforming into an animal is caught on camera, and some experts ask if it's proof of a Skinwalker, a legendary evil creature that can shapeshift into a deadly beast.

A camera captures a person inexplicably bursting into flames. An ancient statue at a museum appears to come to life at night. An alien-like creature is filmed in the sewers. Eerie lights caught on camera may explain a mysterious death.

A man is recorded surviving two lightning strikes in moments. Cameras spot strange lights in the Norway sky, turning a remote area into a UFO hot spot. A bizarre glowing object is caught on tape at a museum, and some wonder if it's an alien artifact.