In 1963, a terrified Cleveland family called in ghost hunter Hans Holzer after witnessing a phantom hand pry up nails and open a trap door; the team heads to Ohio, where disturbing clues lead them to the surprising source of the ghastly haunting.

Hans Holzer believed a sensational tale of heartache and murder hid the real story behind one of his most famous cases; the team heads to New York City's Old Merchant's House to uncover the terrifying truth of this Victorian-age haunting.

A paranormal team investigates true hauntings from the recently discovered case files of America's first ghost hunter, Dr. Hans Holzer, who is recognized as the "father of the paranormal."

A paranormal team investigates true hauntings from the recently discovered case files of America's first ghost hunter, Dr. Hans Holzer, who is recognized as the "father of the paranormal."

Dave Schrader, Cindy Kaza and Shane Pittman reopen the terrifying case of the Surratt Tavern in Clinton, Md., the infamous first stop of John Wilkes Booth after assassinating Abraham Lincoln in 1865.

Dave Schrader, Cindy Kaza and Shane Pittman return to Ohio's Franklin Castle, witnessing the troubled spirit manifest before their eyes; their biggest discovery is something Holzer himself missed.

Hans Holzer had a lifelong obsession with Rockland County, N.Y., the site of his first case; half a century later, the team attempts to decode the region's rampant paranormal activity.

Hans Holzer heard stories of paranormal activity taking place on Staten Island's historic Conference House, a site famous for peace but with a dark and bloody past; when the team return, the spirits guide them to the water's edge.

The team ventures to the Massachusetts coast to follow up on Hans Holzer's 1964 investigation of the Bates Ship Chandlery; as they delve deep into the property's past, they uncover a chilling undercurrent of darkness anchored in the rocky shores.

The team returns to Maryland's Howard Lodge to reopen a case that was shut down in 1969.