BLAZE

A huge chasm appears in a remote part of the Siberian forest. Locals call it to a gate to the underworld. Plus, an island disappears off the face of the planet.

The existence of an entity is proven when multiple people see the same spirit.

An exploration of Queensland's tropical coast with UFO stories of first-hand witnesses, from flying saucers to strange encounters in sugar cane fields.

After 18 years in prison for the murder of a New York multi-millionaire, Daniel Pelosi says he no longer wants to cover up for his ex-wife and is prepared to reveal exactly who killed Wall Street financier Ted Ammon.

Henry and Skid hit H&H Auctions on the hunt for new treasures, spot a promising Kawasaki and head to Newark Autojumble hoping for another big payday.

Les takes Ashley and Seth to the pawn shop his Grandfather started in downtown Detroit, a dominatrix brings her gear into the shop and Seth surprises his father with an emotional birthday present.

Les considers an item that's alleged to communicate with aliens. Then, Seth battles a lady who flips when she can't get her earrings back. Later, Ashley and Seth fight over a lost sale.

Les challenges Seth to a sales competition. As the battle heats up, Les faces his most dangerous customer yet and security may need to step in. Later, Ashley deals with a difficult customer.

Chesterfield in Derbyshire plays host to David Dickinson and his dealers, amongst the items brought along are some Moorcroft plates, a poster of rock legends The Who and a pair of Marley horses. Could a stunning gold and diamond fob watch be the real deal for Michael Hogben?

In West Covina, Brandi makes a serious land grab, and it pays off handsomely. Rene can't resist the mystery of a good safe. Kenny can't seem to satisfy his hunger, while Barry takes an opportunity to poach from the competition.

Rene goes big; Ivy scores a packed locker and stumbles across an antique of unusual origin; Darrell grabs a smaller unit but finds that good things do, indeed, come in petite packages sometimes.

Rene gets lukewarm results bobbing for profits in Stanton. Dusty finds a hoard of quality equipment, inking himself a decent payday. Looking for treasure, Brandi ends up with the green in an unexpected manner.

Barry believes all the whales are coming to the big auction in Fullerton as he takes Dusty under his wing to test him. Rene makes some dainty discoveries, and Darrell's tool locker becomes quite eye-opening.

The women outnumber the men in Rosamond, as Dusty and his girlfriend discover a stockpile of vintage TV memorabilia; Brandi enlists the help of both Danielle and Lisa to dig for gold.

Lancaster turns into Ivy's honeypot, so everyone had better watch out, or they might get stung; Lisa plans to use her brain when selecting lockers; Dusty and Tollbooth Lupe do a mitzvah.

Earth's moon is only one of hundreds in the solar system, each of them a mysterious and often bizarre world. Alien moons could offer a key to exploring outer space and perhaps even finding a new home for humanity.

Humanity has worshipped the Sun since the beginning of time, and yet even with our modern technology, we still know so little about it. We look if unlocking the mysteries of the Sun can be the difference between life and death for human civilization.

Studying strange lights, animal mutilations and other bizarre incidents at Great Sand Dunes National Park.

The tourist-attracting waters of Crater Lake National Park may also be the epicentre of dark and sinister forces from Native American lore that lure visitors to their deaths.

Claims of a demonic truck driver, disembodied voices, nightmarish skinwalkers and a time loop are reported in Canyonlands National Park.

Researchers speculate over the Grand Canyon National Park and a series of strange events, looking at a plane crash and an underground city.

A long-forgotten network of Native American earthworks, a baffling battlefield mystery in Belgium, a mysterious blood-red lake on a remote Greek island, and an eerie pink glow emanating from the middle of the Pacific Ocean.

Discover an underwater find from a violent past, a mysterious concrete 'ghost island' and never-before-seen tracks along the seabed.

Reveal the truth behind ancient legends. Tour an island covered in polar bears, see bizarre twin craters and examine an ocean formation similar to Atlantis.

After seizing power in 1933, Adolf Hitler began systematically transforming a peaceful German population into a ruthless war machine. Experts investigate the innovative methods used by the Nazis to indoctrinate and control the will of its citizens.

'The Codex Gigas', also known as the 'Devil's Bible', is a giant medieval tome that has evoked fear for centuries and is believed to contain a malevolent power. Experts investigate its legendary secrets and uncover the mystery behind its author.

Mary Magdalene played a pivotal role in early Christianity and witnessed the execution and resurrection of Jesus Christ. Experts investigate the truth behind her mysterious disappearance and embark on a quest to locate her undiscovered remains.

For millennia, there has been speculation about how the world will end, from the detailed account in the Book of Revelation, to the prophecies foretold by Nostradamus; a look into whether any of these predictions could come true.

The legendary treasures of the Copper Scroll, King Solomon's mines, and the Syamantaka Gem have captivated the world for centuries. But could these vast fortunes still be out there, waiting to be discovered?

Most of the world's holiest places sit in plain sight, able to be seen and experienced, but there are some hidden deep underground.

A daring plan devised in 1943 by the inmates of the Death Camp at Sobibor, as they staged an organised rebellion to fight back against their Nazi oppressors.

A look at how the new Cold War involving the US, Russia, the UK and China could play out. Will trade and cyber warfare be the worst of it, or is military war inevitable?