Heather and Phil travel to the most haunted chateau in France to investigate terrifying stories of hostile ghosts linked to strange and savage murders. As they investigate, it becomes clear that the castle hosts more paranormal forces than they imagined.

The team heads to Arkansas, where a legendary swamp monster has terrorized the small, rural town of Fouke for over a century.

Phil and Heather journey to the Czech Republic to investigate a castle reportedly built over a literal Nazi portal to hell.

Heather and Phil continue their deep dive into Nazi occult activity in nearby Poland where they investigate Nazi strongholds that harbor terrifying secrets.

Heather and Phil travel to France to track down werewolves that have terrorized the locals for centuries. As their investigation deepens, they must figure out if this beast is supernatural or an elusive wolf not yet known to science.

Heather and Phil travel to an ancient Mayan city in search of a spirit named the Stone Lady. But these aged ruins carry more threats besides vengeful spirits: poisonous snakes, scorpions, and tunnels on the verge of collapse.

In part two of this investigation, Phil and Heather descend deep into the Mayan underworld to explore a vast subterranean cave believed to be the realm of menacing, ancient spirits.

Phil and Heather journey into the Kentucky wilderness, searching for sasquatches rumored to be highly intelligent.

Heather and Phil head to Tennessee's Brushy Mountain Penitentiary to investigate terrifying reports of possession and confront the violent, powerful, and hostile forces lurking in its remains.