Discovery Channel HD

Tim and Howard trek to Philadelphia in search of Ben Franklin's 250-year-old recipe for spruce beer prized by George Washington's troops; Tim and Tickle rediscover a spirit that may have been lost to time.

The greenhorns, hungry to secure their place onboard, start the final week of their trial period; Greg's time managing the hook machine ends in disaster; Caitlin's future as a deckhand is hanging by a thread.

The broke Bushmen are forced to trade opal to get a shaft drilled on a new claim; the Mooka Boys attempt to revive a dump truck and their opal processing plant with disastrous results; the Digi Diggers get lost exploring a terrifying abandoned mine.

A man captures a beam of light in the desert; a couple is convinced they communicated with a UFO; a military man thinks he discovered a portal.

A man shares an original Area 51 video from 1992 for the first time; multiple people capture a Texas UFO sighting; a man films an unusual hovering object in Utah.

A Nevada man sees an object ejecting something in the sky; concertgoers believe they saw a UFO; two brothers recover material from an alleged UFO crash site in Needles, Calif.

A lobsterman from Maine relives a harrowing encounter that has haunted him for years; a family witnesses a strange string of lights in the sky; a man believes he can communicate with alien crafts.

A musician captures a strange object flying over a highway in California; a tourist takes the most compelling UFO photo ever; two friends fear they were abducted on a road trip.

What really became of Konigsberg Castle's Amber Room, stolen by the Nazis? Could a lost hard drive in a British landfill hold millions in Bitcoin? Did King Solomon's legendary mines ever exist?

High on Everest's icy slopes, two climbers vanish into legend. In a quiet West Virginia town, a ghost demands justice from beyond the grave. And learn the real story of Mata Hari -- the exotic dancer condemned as a German spy.

Expedition Files reveals shocking new secrets hidden in our world's most captivating mysteries. With three stories sharing one theme per episode, Josh Gates uncovers stunning revelations, recreating pivotal historical moments in his virtual time machine.

Expedition Files reveals shocking new secrets hidden in our world's most captivating mysteries. With three stories sharing one theme per episode, Josh Gates uncovers stunning revelations, recreating pivotal historical moments in his virtual time machine.

Was the Hindenburg truly destroyed by accident or by sabotage?; could the famous Patterson-Gimlin Bigfoot footage hold clues that only modern analysis can define?; what really happened when 50,000 Persian soldiers disappeared without a trace in 524 B.C.?

Phil and Jess search whitewater rapids and a frigid Alaskan lake for a legendary beast that's now the target of serious scientific inquiry.

Jess and Phil venture into the deadly waters around Andros Island to investigate the suspected presence of a sea monster, but they find something far more shocking.

Heather and Jack Osbourne investigate Vulture City, Ariz., a ghost town with Gold Rush-era spirits; they explore possible ancient, darker forces.

In the forests of Washington's Columbia River Gorge, Phil and Heather hunt a monstrous black cat with an ape-like face. All clues lead to a nearby WW2-era nuclear facility that could be to blame -- but they must find the creature before it finds them.

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.

Reports of shadowy figures and malevolent spirits from Caribbean folklore draw Phil and Heather to Trinidad. They explore a notorious plantation and an abandoned island once used as a leper colony, searching for the source of the chilling activity.

A serene institution in the American Midwest, seized in righteous anger; a subterranean lair in France designed with a disturbing objective; a Spanish settlement, concealing a story of forbidden love and ruthless retribution.

In New Jersey, a symbol of American pride and dominance; a top-secret site in Japan used for wartime missions of no return; an Italian town, whose residents were given lethal advice by government officials.

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.