TV Guide Discovery Channel Thursday

On the trail of the secretive Knights Templar, Josh chases the warriors' lost fortune including the Holy Grail; Josh digs in to find a Templar buried tunnel.

Phil & Heather explore the vast web of caves beneath the cliffside fortress, they seek clues that a god of the underworld may be haunting the castle instead.

Crew investigates 2 abandoned buildings in Pioche, Nev., where there are reports of disturbing activity in Pioche Hospital and sightings of a demonic creature.

Heather and Phil explore North Carolina's Ocracoke Island, where locals fear the ghost of Blackbeard is lingering.

Dustin encounters the largest obstacle of his career as he dives deeper than ever; the new recruit, Scott, gets a chance to prove himself in the water.

Desperate for a payday, the Cheals race against the storm; new team, the Geran Gang, protect their field from unwelcome visitors.

Experts use the latest science to investigate and uncover a failed dredging operation that ruptured a propane pipeline in Corpus Christi, Texas.

Experts use the latest science to investigate and uncover an inadequate structural design a weakness in critical supporting columns in a New Zealand building.

A sinkhole envelops a residential street in the Bronx; experts reveal how a combination of heavy rain and aging infrastructure led to this disaster.

Experts use the latest science to investigate and uncover an outdated, wooden storage facility heavily stocked with volatile, explosive chemicals.

Experts explore the ruins of a once-palatial compound that contains the secrets of one of history's most notorious criminals and reveal why it was abandoned.

A deserted facility in the remote countryside that boasts strange graffiti, which may be highly advanced mathematical equations, is examined by experts.

Experts investigate a panorama of half-finished castles, a sad reminder of a neighborhood once slated to feature thermal baths and incredible views.

Experts explore a decaying stronghold that stood between ancient Rome and the Persian empire, a location that attracted unfriendly visitors.

Archeologists descend on a site in Turkey of the Aegean coast to investigate hilltop ruins that may be the site of the fabled Trojan Horse.

Experts explore the facility a Korean teenager was murdered and the legacy she left behind in the Korean struggle for independence.

In a modern-day treasure hunt, Matt Paxton, the King of Hoards, and his team search for a vintage Mustang, military artifacts and a $60,000 marble collection.

Matt tackles a ten-acre hoard in the Pennsylvania woods to hunt high-value guns & ammo; the machinist's property is packed with heavy equipment and scrap metal.

A shortage of time in California forces Matt to quickly search for a classic motorcycle stashed in one site and find vintage toys stashed in another location.

Matt takes on a rock star mess to find classic guitars and amps, '50s trucks and rare Harleys; the hoard's size and rusted scrap metal puts the team at risk

While searching through a huge mess in Houston, Texas, Matt finds BBQ smokers that he must turn into a big payday.

Matt hunts for rare liquor, hand-rolled cigars and vintage drums in two California hoards; when the owners refuse to part with key items.

Matt and his troops head to the Pacific Northwest to search a 3-barn hoard loaded with U.S. military treasures, including Willy's Jeeps and vintage uniforms.

In the largest hoard he's ever tackled, Matt must find rare military plane parts, vintage records and a hidden jewelry cache to have a shot at making a profit.

While searching through a huge mess in Houston, Texas, Matt finds BBQ smokers that he must turn into a big payday.

Matt hunts for rare liquor, hand-rolled cigars and vintage drums in two California hoards; when the owners refuse to part with key items.

Matt and his troops head to the Pacific Northwest to search a 3-barn hoard loaded with U.S. military treasures, including Willy's Jeeps and vintage uniforms.

In the largest hoard he's ever tackled, Matt must find rare military plane parts, vintage records and a hidden jewelry cache to have a shot at making a profit.

In the face of harsh weather, an emergency repair threatens vital deliveries and a veteran skipper has one last chance at a big catch.

Bishop runs out of luck in his open-cut claim and resorts to explosives; Young guns battle to get their new mine running; pressure mounts for the Blacklighters.