Paranormal investigator Zak Bagans and his crew, Nick Groff and Aaron Goodwin, travel from Idaho to Scotland, and anywhere in between, to scare up the most unearthly mysteries and ghost sightings imaginable. Throughout the season they are seen locked in the abandoned prison of West Virginia Moundsville State Penitentiary, where they learn through the eyes of a former prisoner what the terrifying life was like inside the walls. But this is only the beginning, as they visit abandoned psychiatric hospitals, Edinburghs famous south bridge and the place of demonic possessions and attacks; Hells Gate.