The Discovery Channel HD (Pacific)

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.