The Discovery Channel HD (Pacific)

Phil and Heather travel to Predjama Castle, which has been ruled by a brutal robber baron, who is feared for his cruelty; exploring the vast web of caves beneath the cliffside fortress, they seek clues that an ancient god of the underworld may be haunting the castle instead.

The crew gains unprecedented access to a Los Angeles hospital to expose a demonic energy that has trapped countless souls inside the massive facility; this presence is a force to be reckoned with as the team explores the abandoned halls.

Zak and the crew check in for a night of terror at a Tucson, Arizona, hotel plagued by poltergeist activity and spirit possession.

Zak investigates a former girl's school in Hollywood, Calif., after a gardener discovers bones in a shallow grave; could the remains be connected to sightings of a ghostly girl? Or is something more malevolent at play?

The crew gains unprecedented access to the cursed Rispin Mansion in Capitola, California; sealed shut after a violent paranormal event in 2012, the abandoned home has become a vault of concentrated evil, waiting for an opportunity to explode.

The Ghost Adventures crew unlocks an inhuman darkness inside a shuttered juvenile hall.

Zak and the crew must separate fact from fiction as they investigate strange goings-on inside a Las Vegas warehouse; now operating as a horror-themed escape room, the site's sinister mob history has left behind a foreboding aura of violence and fear.

On the 100th anniversary of Harry Houdini's midnight visit to the fabled Winchester Mystery House, Zak and a team of paranormal experts attempt to summon the magician's spirit; will escaping death's grip be Houdini's greatest trick?

The Ghost Adventures crew unlocks an inhuman darkness inside a shuttered juvenile hall.

Zak and the crew must separate fact from fiction as they investigate strange goings-on inside a Las Vegas warehouse; now operating as a horror-themed escape room, the site's sinister mob history has left behind a foreboding aura of violence and fear.

On the 100th anniversary of Harry Houdini's midnight visit to the fabled Winchester Mystery House, Zak and a team of paranormal experts attempt to summon the magician's spirit; will escaping death's grip be Houdini's greatest trick?

With the advantage of spotter planes, veteran Tyler and young gun Joe battle for the most monster bluefin until Joe helps strongman Niko get back into contention; when Niko's zapper fails, Tyler steps in to save the day.

When Sig's fishing information falls into the wrong hands, he deals his protégé a lesson he won't soon forget; Rick faces a gun-shy deckhand; Sophia contends with a crewman with a badly infected tooth.

A random inspection of travelers leads to the takedown of a cartel stash house; a young woman coming from northern Mexico unwittingly brings across an illicit load; a man is detained for an outstanding warrant he didn't know he had.

When a man waiting in the pedestrian line to enter the U.S. suddenly turns and sprints back toward Mexico, officers give chase; a Mexican national seeks asylum in the U.S. after claiming he was kidnapped and extorted for information by cartels.

When two sisters are pulled over for making an unsafe lane change, officers discover they have an illicit stash that can't cross the border; a Mexican couple attempts to bring a bag of foul-smelling insects for a special recipe.

A woman claims she drove 13 hours for a 15-minute dentist appointment, but she can't remember the name of the dentist, and has no proof of her visit; two men returning from a night in Mexico are pulled over.

A man traveling with his young daughter attempts a U-turn before the border and comes face-to-face with CBP officers; a stand-up comedian is stopped after declaring prescription meds, but analysis shows that the pills test positive for fentanyl.

When an American band is denied entry into Canada due to incorrect paperwork, CBP officers have to investigate; a U.S. citizen coming back from Mexico is flagged as having an arrest warrant, and while officers dig deeper, she attempts to escape.

Firearm clichés; firing a bent-barreled shotgun; firing a gun in space; dropping a gun in a deep fryer; stopping a bullet with weird items; shooting a neon sign.

Adam and Jamie investigate the ability of hit men to take down a target.

The teams test two myths of locomotion from the reliable horse to the sometimes-unreliable motor car.

The team takes five fan favorites and focuses on a new facet for each.

Testing a bathroom hand dryer vs. using paper towels; the cleanest bathroom stall; the best place to stand during an earthquake.

Jamie and Adam are lost in the wilderness with only duct tape and bubble wrap; they must survive the desert, repel down canyon cliff-faces and brave Class 5 rapids.

Mike Rowe submerges in a murky Florida river to pour concrete jackets around crumbling bridge pilings; in North Carolina, Mike sucks out a concrete washout pit and sprays sediment as he turns toxic sludge into potable water.

Mike Rowe attends a dusty baghouse party to clean the filtration system at a North Carolina asphalt plant; in Colorado, Mike gets his dirtiest yet, pyrolyzing waste lumber into the planet's most efficient fertilizer: biochar.

Mike works his hardest construction job yet; he helps a team of rod busters, who carry 2 tons of reinforced steel each for overpass construction.

Mike Rowe helps cat ladies of northern Texas to fix a clowder of feral cats at a spay and neuter facility; Mike and his crew feel the burn as he processes peppers with the mad scientist inventor of the Carolina Reaper.

Mike Rowe crams into a hockey arena's escalator, where he scrapes and cleans a special kind of shmutz from the bottom; Mike and a zookeeper venture into the hot, treacherous Arizona desert at night to round up stinging scorpions.

Mike trains as a trauma surgeon, learning under simulated battlefield conditions; Mike helps to control iguanas on the Florida coast.

Mike works his hardest construction job yet; he helps a team of rod busters, who carry 2 tons of reinforced steel each for overpass construction.

Mike Rowe helps cat ladies of northern Texas to fix a clowder of feral cats at a spay and neuter facility; Mike and his crew feel the burn as he processes peppers with the mad scientist inventor of the Carolina Reaper.

Mike Rowe crams into a hockey arena's escalator, where he scrapes and cleans a special kind of shmutz from the bottom; Mike and a zookeeper venture into the hot, treacherous Arizona desert at night to round up stinging scorpions.

Mike trains as a trauma surgeon, learning under simulated battlefield conditions; Mike helps to control iguanas on the Florida coast.

Master detailer Larry Kosilla turns a clean-freak obsession into a superpower, inventing cleaning techniques to transform forgotten barn finds and discarded daily drivers into high-dollar machines.

Captain Sig contends with a man overboard for the first time in his career; Johnathan comes up short on crab but sees the tide turning when thousands of porpoises guide the Time Bandit in a new direction; Jack tangles with Wild Bill.

Rick plows through Vegas Valley pay dirt and makes a big score, but an obstacle threatens to stall him; Parker's four-plant blitz stumbles; to keep his hot streak going, Tony pilfers more gear from his son Mike.

Parker drops the hammer as he tries to stop his gold slide; Rick makes a discovery that could end his Vegas Valley dreams; Kevin hires a new free agent and makes a big score at his new Sphinx Cut.

Rick makes a $1M call to open a new cut; Parker tasks Brennan with delivering more gold on Indian River; Tony re-engineers Paradise Hill's water system to get sluicing.

Tony's crew defects to Parker's side; Tony relies on inexperienced operators; Parker's new hires cause friction within the team; the group faces animosity as they open a new cut.

Tony blows up at Mike to get the trommel running; two of Rick's crew face off while trying to dig out Valhalla; Kevin leans on Buzz to get more gold.

Parker does the unthinkable to get all the Golden Mile's pay dirt; Rick's mechanic Ryan considers leaving; Mike Beets finally fires up the trommel on the hill.

Rick's shaken by his find at the bottom of Valhalla; Tony bears down on his 6,500-ounce goal; Parker taps Brennan for a big job at the Golden Mile.

Tony spends millions on a new piece of ground for Mike; Parker buys a Golden Goose to turn the season around; Kevin struggles with a recent hire.

Rick returns to Vegas and gets a proposition from Parker; Tony hunts for missed gold in the Hester Cut; Parker's crew loses a truck at the worst time.

Parker brings Sluicifer out of retirement for a big week. Rick prays that Vegas Valley still pays out big. Kevin staffs up for the final push.

Tony guns for over 1,000 ounces in one week. Parker buys a new toy to open even more ground. Rick's crew burns through pay following a hot streak.

Parker and Tony both try to bust through the 10,000-ounce barrier; Rick tries to get the Last Chance cut open before he runs out of Vegas Valley pay dirt.

Parker battles Tony in an intense showdown for the year's top gold haul; Rick grinds at Lightning Creek and expands his operation to save his season.

Parker and Tony set 13,000-ounce gold totals, sparking a battle to see who can mine the most and reigniting an old feud; Rick faces health issues and an uncertain future; a new player enters the Klondike fray.