Lost Monster Files

The team hunts a dog-like creature in the mountains of the Carolinas.

The team uses Sanderson's research to hunt an unknown apex predator in BC.

The team investigates a large bird of prey terrorizing Chestnut Ridge, PA.

A team probes an extraordinary murder case linked to Minnesota's fabled Wildman. Sanderson examined the "Ice Man's" corpse, once a sideshow attraction, before its strange disappearance.

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.