Lost Monster Files

The team investigates a series of strange livestock mutilations in the Great Smoky Mountains that some believe could be tied to the infamous chupacabra. Using journals and evidence from Sanderson's archive, the team attempts to uncover the identity of this killer canine and whether or not it could be part of a secret government testing program.

The team investigates a rash of recent Abominable Snowman encounters in the wilderness of British Columbia using research from Ivan Sanderson's lost archive. When the team debates whether it's actually the elusive creature or a rare bear species, they uncover new evidence that may finally distinguish fact from fiction.

The team makes an incredible discovery when investigating sightings of large birds of prey terrorizing the town of Chestnut Ridge, PA. With a 20-foot wingspan and razor-sharp claws strong enough to pierce through flesh, Sanderson believed it to be the mysterious thunderbird, a pterodactyl-sized predator documented in Native folklore.

The team investigates a stranger-than-fiction murder mystery involving the legendary Wildman of Minnesota. In the 1960s, his body became a sideshow attraction and later disappeared. Sanderson examined it himself, believing it to be the "missing link." The team splits up, leading a new hunt around sightings in the dense MN woods and uncovering a major find at the farm where the body was last seen.

An unknown apex predator is preying on orcas and devouring whales off the frozen coast of Kodiak, Alaska, renewing fears of a prehistoric sea monster lurking in the icy depths of the northern Pacific Ocean. The team conducts an all-out hunt on land and sea using never-before-seen research from Sanderson's lost files -- can they identify the monster and uncover its lair before it strikes again?

For centuries, Arkansas locals have shared stories of a mysterious reptile called the Gowrow that hunts prey in the caves along the White River. A 12-foot monster with a long tail and sharp teeth, it is said to stand on its hind legs and release a loud hunting call that echoes throughout the nearby hollers. Armed with a series of accounts from Ivan Sanderson, the team investigates recent sightings of this creature to determine if it is merely folklore or an ancient reptilian predator that has survived in the underground chambers of the Ozark Caverns.