Jack shocks Sharon and Ozzy with evidence of a "twisted" superhuman, an uninvited dinner ghost and a good old-fashioned flying saucer.

Alex breaks all the rules with his pick. He challenges the team to enter the Indiana State Sanatorium with no information about this terrifying location.

Jeff learns the grave the team found is related to a morbid tradition dating back to the settlers that moved to the Tygart Valley hundreds of years ago.

Paul investigates a surge in demonic activity in America that is overwhelming the Catholic Church. He follows leads from Gary, Indiana, to Mineral Wells, Texas.

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

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.

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.

The Hubble Telescope spots thousands of unknown objects travelling faster than light. Are we being watched? Or could we ourselves be aliens from another world?

A planet shows evidence of an Earth-like atmosphere, while a mysterious glowing light suggests the impossible: an atmosphere on the Moon.

Paul treks deep into the woods of the Midwest in search of Bigfoot. He cuts through hoaxes and misinformation to uncover ground-breaking evidence.

Paul investigates a surge in demonic activity in America that is overwhelming the Catholic Church. He follows leads from Gary, Indiana, to Mineral Wells, Texas.

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?

From a former asylum where victims were experimented on to a remote outpost where a scorned woman killed her husband, historians and witness recount tales of horror.

The team is in Louisiana to investigate a desolate sawmill that locals call the "Mill of Death" - where claims of shadowy apparitions are linked to its tragic past.

Josh Gates sets off on an expedition to crack the mystery behind the perpetrator of the only unsolved plane hijacking in US history.

The team continues to be guided by Trapper's Journal as they head out to do a field investigation. What will they uncover on their expedition?

The team visit a mansion in Virginia for its first-ever paranormal investigation. They seek out the spirit of a young woman said to roam the grounds.

Jack Osbourne and Katrina Weidman head to Pennsylvania to investigate a 19th-century estate rumoured to be brimming with paranormal activity.