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Luminous spheres are appearing globally, moving oddly near military sites, sparking speculation about extraterrestrial contact.

The Legacy of J Allen Hynek: Was Dr Hynek right when he ultimately concluded that there is a non-human intelligence on Earth.

Finding it hard to forgive Seth for trying to sell his business, Les locks himself in his office. Meanwhile, a fight breaks out on the pawn shop floor.

Les is caught in a dilemma over the authenticity of a rare guitar. With no expert on hand, he's forced to go with his gut.

Rich makes a glaring error that could see him fired. Plus, a kooky cowboy arrives at the counter and Ashley reacts to bad manners in the pawn shop queue.

The Golds are forced to take action when they spot a hustler scamming their customers in the car park. Later, Seth and Ashley finally come to blows.

A sloppy mistake threatens to cost the Golds big business. Plus, a dispute on the shop floor turns ugly.

It's young versus old as Les and Ashley compete to find the vintage item that will bring in the most cash. Seth faces off with a troublesome client.

With the warehouse overflowing, Seth mounts a plot to empty it behind Les's back. Can he risk betraying his father again.

Seth goes against Les's advice and buys an old Chevy sign at Detroit's annual Dream Cruise event. Can he sell it and prove his father wrong.

Mike meets a passionate Connecticut picker with a massive inventory, but gaining access to his collection means dismantling a layered wall of stuff.

A seller comes in with a poster by Henri de Toulouse-Lautrec, Chum unboxes some 1912 Yale baseball uniforms and Rick looks at a ukulele from 1919.

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

When war veteran Colonel Henry Carrington takes command of Fort Phil Kearny, he never expects to face such a ferocious enemy.

In northern Wyoming's Powder River Valley, a group of ranchers band together to protect their rights to graze cattle.

On Lot 8, the team makes a stunning breakthrough as multiple treasure finds emerge in the Money Pit, fuelling their hunt for Oak Island's secrets.

.. 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.

Calvin: Buyers discover surprises in Garden Grove. Ivy explores office equipment uses and Dusty stirs things up while learning what makes someone a jerk.

We reveal the devastation inflicted on Europe by the 14th-century plague outbreak. Killing an estimated 200,000,000 people, it remains the deadliest recorded pandemic in history.

We reveal the devastation inflicted on Europe by the 14th-century plague outbreak. Killing an estimated 200,000,000 people, it remains the deadliest recorded pandemic in history.

For more than 150 years, archaeologists and amateurs alike have pursued one of the great historical mysteries: did the Trojan War really happen? (1 of.

For more than 150 years, archaeologists and amateurs alike have pursued one of the great historical mysteries: did the Trojan War really happen? (2 of.

At Scratchy Moo, Matt and Damo are weighing up the two offers they have received for their land.

Leigh outfoxes Donnie and Dennis and wins the rights to Matt and Damo's gold rich land. Dennis installs security cameras on his lease to try and catch the dodgy gold poachers.

Alice Roberts and Matt Williams present more outstanding archaeology. The team unearths a mass grave and search the Thames for clues to a 17th century tragedy.

In the north of Britain, a team discovers clues to Scotland's first kingdoms and metal detectorists unearth a Viking treasure hoard.

The Hells Angels, The Mafia and El Chapo: When war breaks out between the Hells Angels and an enemy, the Mafia steps in.

A raging war with the Bandidos forces the Hells Angels to work with an old rival. A new threat in 2021 leads to a once-unthinkable alliance.

Black Ops reveals covert missions, including a Resistance operative who hid explosives in baguettes to sabotage a Nazi factory.