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Leading scientists and historians from across Europe and the US investigate who this mysterious woman was and why she was so feared, delving into the murky world of vampirism. (2 of.

From killer hurricanes and tsunamis to earthquakes, floods and fires, these are the deadliest natural disasters ever recorded.

From stone-throwing jungle apes to swarms of sinister clowns stalking the suburbs, these are the strange encounters that leave experts scratching their heads.

From missing World War II aircraft to a frozen lake filled with human remains, take a look through how and why humans have become frozen in time.

From a secret underground military facility in Greenland to a grisly collection of human remains in the Andes, explore more secrets in the ice.

Discover more fascinating history buried frozen in the ice, from the body of a legendary mountaineer to the discovery of a zombie virus.

From an ancient mummy with fantastical tattoos buried in Siberia to the remains of a rare infant Woolly Rhino, discover more secrets buried in ice.

Discover more incredible history buried frozen in the ice, from a body buried on the Himalayas' Killer Mountain to the remains of a Woolly Mammoth.

Forest fires threaten Rust Valley and after his neighbour loses 350 cars, Mike hoards fuel in a bid to save his own collection.

Gold Coast socialite couple, Kimberley and Ritchie, make the tough decision to move from the Gold Coast to the mine to help Dan out.

There are nine weeks left of the gold season to go and the pressure is on. At Swiss Diggings, an unemployed Donnie begs Dennis, the owner of Swiss Diggings, for a new job.

Alec attempts to forge a ferocious renaissance-era sword breaker, a dagger that would trap and disarm an opponent's sword using teeth along its blade.

In a special double episode, Rick heads to LA to auction off some of the store's biggest ticket items. Meanwhile, Chum plans an auction of his own.

I Am Gary, Hear Me Bid!: Rene's workday with his daughter becomes a beach trip and Kenny looks to his youth for profitable inspiration.

.. Payback's A Bit*h!: The Lord of Lancaster asserts his reign by levying tariffs on the little people and Kenny finally finds himself some decent profit.

The designer of one of the most popular car brands in history, Ferdinand Porsche would not have seen his success without the support of Adolf Hitler.

Donnie and Leigh come face to face in an explosive showdown. At the 1870 mine site, Richie is worried mining manager Dan has lost his mojo.

All three mining teams are racing to hit their $500,000 gold targets, with Damo and Matt the goldfield's front-runners. Season finale.

An Alabama aeroplane hangar is packed with medical quackery and Mike and Jersey go wild for a legendary collection of super-rare motorbikes.

From Las Vegas to Dubai's Burj Khalifa, as sand, salt and sun dismantle cities, the wastelands quietly take back the ground borrowed.

Rick gets a shot at an original Eastman Kodak camera, while Corey has a sweet tooth for an unopened box of 1980s Star Wars candy.

Mike uncovers the mother lode of saloon relics and gambles big money on a rare slot machine. Meanwhile, Robbie and Jersey try to broker a deal with a Mack truck fanatic.

Four bladesmiths are challenged with forging a canister Damascus knife using only steel wool and 1095 powder.

An Alabama aeroplane hangar is packed with medical quackery and Mike and Jersey go wild for a legendary collection of super-rare motorbikes.

Donnie and Leigh come face to face in an explosive showdown. At the 1870 mine site, Richie is worried mining manager Dan has lost his mojo.

All three mining teams are racing to hit their $500,000 gold targets, with Damo and Matt the goldfield's front-runners. Season finale.

Man Stalked By Cougars, When Planes Collide, Buried Alive & Terrifying Drive: Skydivers narrowly escape two colliding planes, a father and son drive through a wildfire and more.