The guys head back to handle unfinished business at Cannon Memorial Hospital. Armed with more intel, the team is set to unlock this bloody hospital's past.

The team head to the Great Smoky Mountains after a reported Sasquatch sighting. Once there they enlist a professional hog caller to try and lure one out.

Experts discuss theories related to the world's most famous cryptid, Bigfoot. Recently uncovered evidence unveils a creature far fiercer than previously believed.

Don Wildman investigates the unexpected story behind the Alaskan flag, the madman behind an important English Language book and a quest to save Chicago.

Casey and Chris head to Florida in search of the loot of pirate Jose Gaspar. They leave no stone unturned as they hunt for the $30 million treasure.

Chris and Casey Keefer are in New York tracking down the lost fortune of Dutch Schultz. The brothers use Schultz's final words to guide them.

Chris and Casey trek into the heart of Alaska to recover a lost plane that crashed whilst carrying two politicians onboard. Can they solve the 47-year-old mystery?

To help clone the extinct woolly mammoth back to life, Josh visits a biotech lab driving the project and excavates ancient bones in a Canadian mine.

Josh treks deep into Siberia for a site where priceless mammoth bones are mined out of the permafrost.

Why was Las Vegas a Nazi target for wartime sabotage, a test ground for Atomic Bombs, and a meeting place for 9/11's terrorists?

From the rallies held at Madison Square Garden, to the plots to steal the secrets to the nation's weapons of war, the American Nazis terrorised the USA in the 1930s.

Did aliens help build the Pyramids? Or does the "ancient astronauts" idea go back to Swiss author Erich von Daniken, whose books challenge religion and science?

Discovers which of America's founding fathers used sex as an instrument of diplomacy and which one secretly scoffed at the divinity of Jesus.

At the height of the Cold War, the USA searches for a way to create a generation of "Supersoldiers" who use telepathy to win battles.

A secret part of history has remained hidden, locked away for centuries in the hulls of ships in New York or in the depths of an abandoned copper mine.

Throughout the American civil war, victory on the battlefield was often decided not by strategy and bravery alone, but also by secret information coming from the shadows.

Gold is one of the most valuable treasures on Earth. Since ancient times, man has gone to extreme lengths to get it. But where is most of the gold today, and who owns it?

When Mykel and Ruth get stranded on the edge of a sprawling mangrove swamp, they battle to find food and drinking water. Things get even worse when Mykel slips into a sinkhole.

With the team on roll at Gold Run, things are beginning to look up. But when freezing winter storms approach, everyone is forced to evacuate camp.

Throughout the American civil war, victory on the battlefield was often decided not by strategy and bravery alone, but also by secret information coming from the shadows.

The Roanoke colony vanished without a trace, and centuries later, it remains one of history's greatest unsolved mysteries. Can new evidence reveal its fate?

Chuck Zukowski has been investigating phenomena across the USA for 25 years. Now he spots a pattern: reports of UFOs along the 37th degree parallel.

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.

The Klinge brothers detect paranormal activity in the basement of a notorious, abandoned Civil War era orphanage. Can they expel the spirit of an abusive matron?

Don Wildman investigates an extraordinary maritime rescue, mysterious skeletons and a daring escape.

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.

In Sicily, household items suddenly burst into flames, but why? Plus, on the coast of Australia, three friends mysteriously vanish from their yacht.

A campus policeman is lured into a building by the vengeful ghost of a murdered student, and an officer encounters a deceitful spirit inside a courthouse.