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Across centuries of human history, there have been many great kings, but Ivan IV does not hold this particular epithet. Experience his reign as the first tsar of Russia.

A security officer is visited by an unearthly presence at a nuclear launch site, before waking up miles away. Meanwhile, a higher power seems to protect a US Army gunner.

Some of the most painful animals can be found in your very own backyard. Rob and Adam take on an Assassin Bug, a Jerusalem Cricket, and the Brown Widow Spider.

There's No Crying in Pawn Stars: Chum puts his best foot forward when a Nike LeBron sneaker hits the counter, while Rick keeps tabs on a signed Pulp Fiction poster.

Chum brings out his inner warrior when a Japanese samurai mask hits the counter and a Norman Rockwell autograph comes into the shop.

Rick and Corey dart out of the shop to check out a 1968 convertible. Meanwhile, Chum desperately wants a piece of an oreodont fossil.

Four metalsmiths must harvest materials from a metal sculpture to forge their Damascus blade, before the finalists duel with Flamberge Rapiers.

In the final round, the winning contestants face off to forge the longest round one weapon in Forged in Fire history: the Wakizashi.

There's No Crying in Pawn Stars: Chum puts his best foot forward when a Nike LeBron sneaker hits the counter, while Rick keeps tabs on a signed Pulp Fiction poster.

Chum brings out his inner warrior when a Japanese samurai mask hits the counter and a Norman Rockwell autograph comes into the shop.

Rick and Corey dart out of the shop to check out a 1968 convertible. Meanwhile, Chum desperately wants a piece of an oreodont fossil.

Rick prepares for battle over a pair of vintage posters, Corey takes a look at an old fireman's megaphone and Chum heads over to a photo gallery.

Rick aims to get a rifle from the 1800s, a seller flexes a signed autobiography by Arnold Schwarzenegger and a ventriloquist doll makes Corey's head spin.

Rick and Chum show off their pearly whites when a seller brings in a pair of T-Rex teeth, while Corey goes to bat for a signed Mark Buehrle jersey.

The Pyramids of Giza are the only surviving wonder of the ancient world, becoming a UNESCO World Heritage Site in 1979. But what truths are they hiding.

For centuries, the Holy Grail has been an object of mystery and fascination, with ties to the Last Supper and the crucifixion of Jesus Christ.

This ornate, gold-plated chest housed the 10 commandments given to Moses by God and is said to have been built some 3,000 years ago.

Explore the huge Nazca lines that were made over 2,000 years ago and are still a mystery to researchers today.

With unimaginable wealth and power, Cleopatra was once of the most iconic figures of the ancient world. But what is the truth behind her mysterious character.

The 'lost' island subcontinent, often idealised as an advanced, utopian society with the wisdom to bring world peace, has captivated dreamers for generations.

The blazing heat in Riverside inspires Lisa and Kenny to break out the parasols. Dusty wears his intuition on his sleeve and Ivy releases the hounds.

The buyers try their luck at a new La Habra facility where Ivy teaches them a lesson. Meanwhile, Dusty brews himself up an interesting unit.

Brandi and Lisa's friendship is tested as they go head-to-head on a pair of lockers. Kenny sets his fears aside and takes the plunge on a unit.

You Can Lead a Horse to a Locker: Barry and Kenny show up in their alternative fuel vehicle. Meanwhile, Lisa does her best to break the curse of the bad locker.

Piles to Go Before I Keep: Laura takes the reins in Fullerton and outsells Dan. Brandi gets assaulted by her locker and Darrell stumbles across an unexpected collection.

Ivy's locker shines some light on the business, while Lisa learns that she needs her locker about as much as she needs a hole in her head.

50 years since George Davis' arrest, Christopher Eccleston talks to those who fought for his release, before interviewing the man himself.

Examine the case of James Hanratty, who became one of the last men to be hanged in Britain when charged with murder in 1961.