In 1968, Hans feared possession at the hands of a powerful entity. The team travel to Waterford, Maine, to confront this dark presence.

Jack Osbourne and Katrina Weidman travel to Philadelphia to gain unprecedented access to one of the US's oldest and potentially haunted prisons.

The Spirit Hunters travel to Lubbock, Texas, where a mother suffering from sleep paralysis says she and her young children are being targeted by a malevolent entity.

The haunted plantation has a treacherous 300-year-old history. The team hunts for the spirits of pirates and a headless horseman said to still roam its grounds.

The AIMS team travel to Pike County, Kentucky, to investigate a huge canine predator who is menacing the local farming community.

Paul searches for evidence that extra-terrestrials are among us. He unearths long-buried files that could lead to an alien cover-up all the way to the White House.

Don Wildman examines a replica of a famous bell, inspects a photo of a suspicious chef and investigates an illustrated book depicting a devilish fiend.

Don Wildman examines a scorecard connected to a legendary figure skating rivalry. Plus, the story of an underwater microphone used in World War Two.

Treasure hunter Darrell Miklos dives the waters of Campeche, Mexico in search of shipwrecks first located by astronaut Gordon Cooper from space in 1963.

Darrell seeks clues from Cooper's past. His widow reveals many secrets, but a former NASA flight director won't say a word. A big piece is missing in Darrell's mission.

Jack pulls out all the stops to turn Sharon and Ozzy into believers with videos of ghost children, spooked pets, cloaked UFOs and a glitch in the matrix.

Jack, Sharon, and Ozzy debate if mirrors can be haunted and whether aliens use cloud-cloaking technology. Plus, just how big are Bigfoot's feet?

Adventurer, Josh Gates, ventures into the ancient Maya city of El Mirador in search of the lost tombs of mysterious ruling dynasty, the Snake Kings.

Josh Gates delves into Wild West lore to find Butch Cassidy's missing money. He traces the iconic outlaw's footsteps through Colorado, Utah and Nevada.

A mummy recovered at the bottom of the Atlantic has led treasure hunters to $120 million in gold and jewels stolen by infamous pirate Black Sam.

Archaeologist Ramy Romany investigates a mysterious underwater grave in the ancient Mayan city of Mayapán. Were these people victims of human sacrifice?

Treasure hunters search for clues to a vast fortune they believe is hidden on Brazil's "Snake Island." But team tensions could derail the expedition.

The team gear up for their first venture onto Snake Island, where they'll face triple-digit heat and one of the world's deadliest vipers.

The truth behind America's secret bunkers - from backyard boxes to government mini-cities. Underground bunkers have featured in war planning since the dawn of time.

We'll explore a conspiracy that helped three inmates escape the dungeon of Alcatraz, and discover the remnants of a mysterious military outpost linked to Abraham Lincoln.

Josh Gates investigates how a group of Norse tribesmen gained power in medieval Europe. His quest for answers takes him from Denmark to Iceland.

The team reopens Hans Holzer's investigation of a castle in New Jersey. Their exploration reveals a woman's nightmares may have a supernatural source.

The team reopens Hans Holzer's unsettling investigation of the infamous Barnstable House in Cape Cod, Massachusetts. They discover tragic spirits from the property's past.

Josh Gates traces the Vikings' westward expansion from the volcanic landscape of Iceland to a mysterious settlement in Greenland and into North America.