Nick and Katrina submerge themselves among the spirits of West Virginia's Old Sweet Springs Resort to see what lurks beneath the surface of the once-idyllic retreat.
Nick and Katrina go to Wildwood Sanitarium; after its conversion into apartments, tenants report an unnerving male presence and furniture being rearranged.
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.
Nick and Katrina are in the historic Jim Beam Distillery, exploring employee claims that bourbon is not the only spirit locked inside its huge warehouse.
Nick and Katrina unlock a local legend at the Old Cambria County Jail; while in pursuit of notorious prisoners, unearthly voices draw them to the prison's dungeon to confront something even darker.
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.
Nick and Katrina spend 72 hours untangling the mysteries of Monroe Demon House, dealing with wraiths that are at odds with each other.
Nick and Katrina visit a historic manor in Middleboro, Mass., to determine if it's unsafe for tourists; Katrina investigates hauntings beyond the house; the paranormal activity hits too close to home for Nick.
St. Ignatius Hospital in Colfax, Wash. has been abandoned since 2003, but Nick and Katrina soon realize they are not alone in the hospital.
Nick and Katrina set out to document the elusive shadow figures lurking within the expansive corridors of Waverly Hills Sanatorium in Louisville, Ky.
The team is called to Ohio to help a bereft mother identify the dark energy forcing her family to flee their home; Nick gets caught in a psychological battle between good and evil.
Nick and Katrina discover that the ghostly remains of a hotel's sordid underground history may have no intention of staying buried; Nick and Katrina learn not everyone has checked out of the Anderson Hotel.
Nick and Katrina gather visual evidence of a child in the attic, but a mansion's history as a mob hangout have them questioning whether all the spirits they encounter are that innocent.
Drawn to small town Iowa by reports of aggressive shadow figures, Nick and Katrina venture to the harrowing halls of Malvern Manor to capture evidence of the fearsome phenomenon.
On the 10th anniversary of the grisly death of Addie Hall by her boyfriend Zack Bowen, Nick and Katrina return to the scene of the crime in New Orleans to find what spirits still remain.
After the owner's tragic death, a Victorian mansion reportedly curses all who live inside, and Nick and Katrina find the curse may be even more dangerous than they anticipated.
Nick and Katrina investigate a haunted jail in Savannah; haunted by phantom noises during their confinement, they realize that they are not alone.
Katrina Weidman and Nick Groff launch a special investigation of the Black Monk House in Yorkshire, England, feared for its violent poltergeist activity; Groff and Weidman plan to stay in the house for 100 hours.
Nick and Katrina investigate the abandoned and haunted Trans-Allegheny Lunatic Asylum in Weston, West Virginia.
Over a 72-hour confinement period, Nick and Katrina learn not everyone has checked out of the Anderson Hotel.
Katrina and Nick investigate a Victorian mansion in Cleveland; the Franklin Castle was home to wealthy immigrant, Hannes Teidermann; Teidermann buried both his wife and one of his children while living in the mansion.
When Nick and Katrina arrive to investigate residual hauntings inside the long-shuttered Randolph County Infirmary in Winchester, Ind., they are alarmed to discover that there are still residents in the building.
As Nick and Katrina investigate the demonic past of a house in Hinsdale, N.Y., Nick gets caught in a psychological battle between good and evil.