The Tennessee Wraith Chasers explore the Peoria State Hospital, where over 10,000 people died, and race to reach the spirits before the building is demolished.

Experts explore a new theory surrounding Scotland's Loch Ness Monster. The creature may not only be real, but possibly more dangerous than ever imagined.

The Klinge brothers explore the Montana Prison; are the men who died in this brutal gaol still here? Plus, in Tennessee a couple fears a poltergeist is after their son.

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.

Josh ventures to the American south to uncover the mystery of real-life buccaneer Jean Laffite and the location of his hidden treasure.

Josh Gates takes on Central America's jungles to investigate the crystal skull discovered by an adventurer who was the inspiration for Indiana Jones.

Recently disclosed audio recordings and astonishing photographs may provide the most conclusive evidence to date that the Ozark Howler may have demonic origins.

New evidence reveals a Vietnam War pilot may have returned home with a secret cargo. Experts use this to try and find the missing link in human evolution.

The team tracks down a unique marker, taking them to a maze-like location riddled with caves. The determination pays off as they start unearthing priceless artefacts.

Chasing a two-billion-dollar fortune, a landslide and the infamous "Death Road" put the team in danger as they try to cross South America's Andes Mountains.

Could spaceships really be powered by atomic bombs? Plus, why was Neil Armstrong's transmission feed cut off when he spotted strange lights on the Moon?

Test pilot ace Gordon Cooper is preparing to test a revolutionary landing system when two UFOs appear. Plus, what is the mystery of Saturn's mega-hex?

Josh investigates the theft of one of the most iconic pieces of Hollywood memorabilia: the ruby slippers worn by Judy Garland in The Wizard of Oz.

The team heads to Pennsylvania to investigate a former care home. What happens when Alex evacuates the property in a paranormal-induced emergency.

The team investigates a hospital in Texas with a gruesome history. The abandoned building's chapel is rumoured to be home to a demonic entity.

Josh ventures to the American south to uncover the mystery of real-life buccaneer Jean Laffite and the location of his hidden treasure.

Ed and Lorraine Warren influenced today's ghost hunters. Interviews and archives chart their rise as a paranormal power couple.