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The team investigates a series of livestock mutilations in the Great Smoky Mountains that some link to the infamous chupacabra; using evidence journals from Sanderson's archive plus new clues, the team attempts to confront the killer canine.
The team investigates recent encounters with a monstrous apex predator in the wilderness of British Columbia; using never-before-seen clues from Ivan Sanderson's lost archive, they uncover new evidence that may finally distinguish fact from fiction.
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.
The team investigates a stranger-than-fiction murder mystery involving the Wildman of Minnesota; known as the Ice Man, its body became a sideshow attraction that Sanderson examined himself before it mysteriously disappeared.
A mysterious apex predator is stalking orcas and boats off the coast of Kodiak, AK; sea monster sightings, first studied by Sanderson before his death, have spiked in that area recently.
When Ozarks locals report frightening encounters with a mysterious, dragon-like beast, the team conducts their most ambitious hunt yet.