A 19th-century prison hides a chilling secret within its walls. A sealed door haunts a British museum and residents from the past roam a historic village.

From a Nevada motel with a clown theme to a Maine movie theatre where the horror lurks in the aisles, historians and witness recount tales of horror.

Josh concludes his investigation into the mysterious Maya city of El Mirador, including the possible burial of the Snake Kings.

The team returns to Oregon to investigate a record amount of Bigfoot tracks. Can a new dangerous technique help to capture this elusive creature?

Neil is set to reopen the Motherlode mine - will a new arrival risk his empire? Jeremy starts a new venture, and an unlikely bond forms with two rivals.

Neil defies both nature and locals by developing his mine tour. But when the town discovers his secret construction project, McCarthy draws a line in the sand.

Lee is down to a crew of three as he races to finish the cabin before the lake freezes. Derek's crew must push through endless rainfall to complete the project.

Extreme building is back in Alaska. Three men risk it all to build a remote hunting cabin, an off the grid bear lodge and an island retreat.

After a huge cargo ship suddenly vanishes with 27 crew members on board, new evidence suggests the culprit may be a mythical rogue wave.

New technology reveals lost cities in hostile jungle - could this lead to a discovery of the mythical El Dorado? And, a crystal is found on a shipwreck.

The Ghost Lab team investigates the ghostly goings on at the Shanley Hotel, which is believed to be haunted by its former owner.

The Klinge brothers investigate the grounds of an abandoned amusement park with a deadly history. Are the children who died here still haunting the fun park?

Don Wildman unveils the story behind a novel that was supposedly written by the ghost of a legendary author. And, a painting that isn't quite what it seems.

Don Wildman uncovers a culinary mystery about a popular salad dressing. Plus, the story of a hero horse who put her life on the line to save others.

A dangerous storm threatens to shut down the operation just as Darrell and team discover gold ore in the remains of an old wreck.

Leading to one of the richest finds in Darrell's career, the team discovers ornate artefacts that indicate the location of a 16th century captain's quarters.

The Osbournes get weird with footage of an alleged zombie and the elusive Ohio Grassman. Plus, Jack turns up the volume on the HUM conspiracy theory.

The Osbournes get the scoop on an extra-terrestrial hook-up. Plus, Jack pushes his parents to believe in ghost pets and interdimensional green children.

Tim Wood and Sapphire Sandalo arrive in Montana to help a family solve the haunting of Gunslinger Gulch. What is the source of the disturbing paranormal activity?

Jack tries to make his parents believe with ghostly employees and real-life Ents. Also, Ozzy is baffled by evidence of extra-terrestrial activity.

The team travel to a cursed 14th-century mansion on the rugged and stormy coast of Ireland. They're prepared to encounter poltergeists and ghostly nuns.

The team continues their investigation in the Tygart Valley and soon are on the hunt for the source of a mysterious "rattling chain" noise.

Colton is fishing on a lake when something in the woods catches his eye. Is he being stalked by a pale humanoid creature?

A teenager sneaks out of her home to go on a double date. But she soon finds herself attacked by what she believes is an aggressive dogman.