Lost Monster Files

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

The team makes a discovery while investigating sightings of a large bird of prey terrorizing Chestnut Ridge, Pennsylvania; Sanderson believes it to be the mysterious thunderbird, a razor-clawed predator documented in Native folklore.

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 Sandersons lost files -- can they identify the monster and uncover its lair before it strikes again?