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Strange Technology: There are many puzzling artefacts from around the world, challenging everything known about the technological capabilities of distant ancestors. (S4, ep 6)

North of Calgary, the guys visit a prolific collector with plenty of outbuildings and a sprawling graveyard of historic cars that capture Scott's attention. (S1, ep 2)

The guys visit a garage sale devotee and then scour a sprawling outdoor antiques show where the prices are steep and one vendor is driving Scott nuts! (S1, ep 3)

In PEI, the guys hit a 70-mile garage sale set up clear across the island. While Sheldon eats fresh oysters, Scott searches for treasure. (S1, ep 4)

Battles: Relive history's deadliest battles, from Cannae and Agincourt to Stalingrad and the Battle of the Bulge. (S1, ep 9)

Strangest Places: Step inside the world's strangest places, where reality bends, logic breaks and some locations truly take the cake. (S3, ep 9)

You're a Good Man, Chumlee Russell: When a seller brings in a WWF figurine, Chum looks to a higher authority. Plus, Rick takes a stab at a 19th-century knife pistol. (S25, ep 2)

Picking Against Time: On the hunt for a delectable Porsche, Mike speed-picks in South Carolina while Jersey visits a motel-size collection of petroliana. (S20, ep 3)

North of Calgary, the guys visit a prolific collector with plenty of outbuildings and a sprawling graveyard of historic cars that capture Scott's attention. (S1, ep 2)

The guys visit a garage sale devotee and then scour a sprawling outdoor antiques show where the prices are steep and one vendor is driving Scott nuts! (S1, ep 3)

In PEI, the guys hit a 70-mile garage sale set up clear across the island. While Sheldon eats fresh oysters, Scott searches for treasure. (S1, ep 4)

Pawn Creature: Corey comes face-to-face with a life-size Creature from the Black Lagoon. Feeling inspired, he and Chum set out to give Rick a fright. (S16, ep 32)

Say Hello to My Little Caddy: A seller shuffles into the shop with a football signed by Da Bears, while Chum strikes a jumpman pose as he checks out a Michael Jordan statue. (S25, ep 3)

Happiness is a Warm Laser Gun: Mary finally manages to find a vintage goodie in El Monte; Ivy uncovers decades-old family fun; while Darrell revisits a childhood pastime. (S10, ep 7)

Value of the Dolls: Jarrod finds the Party Locker he's always wanted, Rene discovers a new mobile business opportunity and Ivy's footwear makes a huge impact. (S10, ep 8)

L. Ron Yuuuper: Ivy angles his way into some vintage outdoor accessories; Dave ends up in an unexpected audit; while Emily's departure ruins one buyer's day. (S10, ep 9)

The Nutty Appraiser: The Dotsons return. Dave tries to get his motors runnin', Darrell stumbles over a curious collection and Rene finally goes nuts. (S10, ep 10)

In 218 BC, a Carthaginian army set out to challenge the might of Rome. The route chosen by Hannibal has been disputed ever since and researchers believe they could now have the answer.

Extraterrestrial Lairs: Explore hidden worlds as myths of gods, giants and cave dwellers emerge from lost mountains, secret tunnels and ancient legends. (S2, ep 12)

Storm's A-Brewin: Tempers flare as hordes of angry customers face hour- long lines, Les must work out whether a dealer's wheeling stolen goods, and Seth and Ashley's feud erupts. (S2, ep 3)

Desperate Pawn: Seth takes a beating when a negotiation slips into a kung-fu showcase and Ashley must scramble to find an angry customer's missing guitar. (S2, ep 4)

Skulls & Scoundrels: The Golds' good reputation is at stake, when a customer claims he was sold a fake watch, and Ashley offers a customer way over the odds for some gemstones. (S2, ep 5)

The Gambler: Les is forced to call security when a row over a missing item turns violent, a gambler drops in for funds and a customer tries to shift a gynaecologist's table. (S2, ep 6)

Fool's Gold: Les causes drama when he tells a woman her gold bracelet is fake. Later, it's Seth's turn to suss whether a gold watch is priceless or worthless. (S2, ep 7)

Cash Kings: An out-of-character Les makes an impulse decision that threatens to backfire, and later gives a big loan to a customer with a dubious sob story. Has he been fleeced? (S2, ep 8)

The Five-Generation Pick: Mike visits a time-capsule drugstore in Indiana, while Robbie and Jersey comb through a five-generation farmstead in West Virginia. (S20, ep 4)

Beat the Unbeaten: Off the Hook: A thrilling showdown between two previous champions, each ready to showcase their skills in a high-stakes five-hour challenge. (S10, ep 12)

The Battle of Thermopylae: Journey back to 480 BC, when King Leonidas and his 300 Spartans successfully blocked Xerxes' two-million-strong Persian army at Thermopylae. (S1, ep 3)

The Battle of the Teutoburg Forest: Rome never recovered after Arminius' tactics in the Teutoburg Forest. Many of the associated riddles are answered, but some remain unresolved. (S1, ep 4)

Extraterrestrial Lairs: Explore hidden worlds as myths of gods, giants and cave dwellers emerge from lost mountains, secret tunnels and ancient legends. (S2, ep 12)