The team reopens Hans Holzer’s investigation into a Revolutionary War-era warship in Baltimore Harbor. They discover the spirits of the ship’s deep, dark past may still be manning their positions on a postmortem mission.

When Hans Holzer visited the Ayers-Allen House in Metuchen, New Jersey, in 1960, he found entities dating back to colonial times. Now his case file is reopened, and the team discovers the spirits there may have a more ominous origin.

The team reopens one of Hans Holzer’s most tragic cases, revealing poltergeist activity he saw 50 years ago in Tyler, Texas, is disturbingly similar to unexplained activity terrorizing a family today.

The team resurrects Hans Holzer's investigation of a mysterious castle in Paterson, New Jersey. Their exploration of the lavish mansion reveals a woman's recurring nightmares may have a supernatural source in the dwelling's dark history.

The team resurrects legendary ghost hunter Hans Holzer's case file of the haunted Morris-Jumel Mansion in New York City to investigate a dark, mysterious presence residing within the historic home.

The team heads to San Diego to visit the Whaley House, deemed by Hans Holzer as the most haunted home in America. Their harrowing investigation reveals a dark presence may still be influencing the living in an attempt to fulfill a centuries-old vendetta.

The team reopens Hans Holzer's unsettling investigation of the infamous Barnstable House in Cape Cod, Massachusetts. They discover the tragic spirits from the property's past may still be seeking a horrific reckoning with the living.

The team reopens legendary ghost hunter Hans Holzer's 50-year-old case of rampant paranormal activity at one of the oldest houses in Rye, New York. They aim to find out if the terrifying and tortured souls have finally moved on -- or simply moved.

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.

The team revives Hans Holzer's investigation of the Ocean-Born Mary House in Henniker, New Hampshire. They traverse multiple states and boldly wade into the dark waters of New England folklore in search of the elusive truth behind the mysterious haunting.

The team relaunches a case that eluded Hans Holzer his whole life: the Howard-Dickinson House in Henderson, Texas. Their investigation reveals that local lore about the historic home may contain a dark family secret.

The team uncovers the dark truths buried on a New Hampshire hilltop.

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.

In 1969, Jaqueline Emery called Dr. Holzer out to investigate her home in Sykesville, Maryland, also known as the Howard Lodge, a Georgian mansion from the 1700s.

Between 1960 and 1975, Hans conducted several investigations of Franklin Castle, one of America's most haunted houses. Strangely, he refused to publish his findings. The team travels to Ohio to uncover why he intentionally buried the mysterious case.

Hans Holzer had a lifelong obsession with Rockland County, NY, the site of his first case. Half a century later, the team attempts to decode the region's rampant paranormal activity. Does it stem from a revolutionary past or something far more sinister?

Hans believed a grisly murder haunted Staten Island’s Conference House, where in 1776 a last-minute meeting failed to stop the American Revolution. But when the team returns, they’re led to the water’s edge where a terrible truth awaits.

The team unearths Hans Holzer's long-hidden case file of the Surratt Tavern, the infamous first stop of John Wilkes Booth after assassinating Abraham Lincoln in 1865. They seek to uncover the true identities of the dark souls haunting the property.

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The team investigates an entity capable of possessing the living in Maine.

The team confronts a dark and unsettling presence aboard the Queen Mary.