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Nick and Katrina submerge themselves among the spirits of West Virginia's Old Sweet Springs Resort. What lurks beneath the surface at this once-idyllic retreat?

Nick Groff and Katrina Weidman visit Wildwood Sanitorium, New York. After its conversion into apartments, tenants have reported an unnerving male presence and furniture being rearranged.

Paranormal investigators Nick Groff and Katrina Weidman visit the now former Higginsport School in Ohio.

Ghost hunters Nick Groff and Katrina Weidman visit Kentucky's Jim Beam Distillery, exploring employee claims that bourbon is not the only spirit locked inside its huge warehouse.

Nick and Katrina Weidman explore the Cambria County Jail in Pennsylvania, which once housed the area's worst criminals, staging executions in its early days.

Nick and Katrina use high-tech equipment to face down the dark spirits in one of America's most notorious haunted hotspots - Bobby Mackey's Music World.

After Nick and Katrina found human bones in their first lockdown at the Monroe House, they thought the case was closed. Now they return to explore further.

A threatening presence brings the construction on the Beattie Mansion to a standstill. Nick and Katrina use cutting edge experiments to lure out the ominous spirits.