Jack and Katrina visit a mansion in Denver. Plagued by bad luck and a string of untimely deaths, some believe that it has a portal to the netherworld.

Steve travels to Hebron, Kentucky, to investigate an evil entity attacking a local woman in her home. As he and his team get closer to answers, spirit becomes violent.

The TWC return to the site of their first paranormal investigation, where they hope to uncover the true identity of a menacing shadow figure.

The team investigates a killer bear-canine hybrid. They track the creature across treacherous terrain and attempt to capture it inside of a caldron trap.

In 1968, Hans feared possession at the hands of a powerful entity. The team travel to Waterford, Maine, to confront this dark presence.

Don Wildman examines a dangerous mission into outer space. Plus, the story of a pilot's heroic plan during an emergency over the Pacific.

Don Wildman examines a mysterious explosion at a munitions factor during World War One. Plus, the story of a house that supposedly comes with three ghosts.

Josh explores three legendary locations where stone labyrinths hide something incredible.

Josh Gates explores other great walls in India, England and Taiwan.

Josh Gates explores places where unusual heroes rule the day in Madagascar, India and Mexico.

Josh examines places darkened by the past, from a mansion connected to a haunted heiress in California to a festival marking the death of a demoness in India.

Discover the truth behind the UFO cover up. Did a Nazi flying saucer crash in New Mexico? Are aliens living at Area 51? Or are these rumours to hide the real story?

Outlaw bikers are often secretive organisations. But are they international crime syndicates, or social clubs for outcasts and nonconformists? Discover the truth.

Josh explores the case of World War II hero Gertrude "Tommy" Tompkins of the Women Air Force Service Pilots, who went missing when her P-51 Mustang crashed.

In the former Third Reich, Josh is trying to crack a code allegedly embedded by Hitler's secretary into sheet music. Could it lead to Nazi gold?

A missing mummy could re-write the history of Abraham Lincoln's assassination. Ramy Romany investigates whether John Wilkes Booth actually escaped.

Archaeologist Ramy Romany investigates whether King Tut's mummy was burnt from a change in the mummification process, or was there a more sinister reason?

The team uses explosives to blast their way to the treasure. Shawn and Javier unearth the expedition's largest find yet, confirming they are on the right track.

Toxic fumes threaten to end the search and the team must improvise a solution. A startling discovery on an aerial drone camera reveals an important location.

Don investigates a plague that killed thousands of sheep, an unexplained encounter from beyond the grave and a deadly substance used in an odd murder plot.

Don investigates a cat who stalks the halls of the US Capitol building before national tragedies and a gruesome triple murder committed on the high seas.

Josh journeys to the Holy Land to investigate a biblical mystery - where was Jesus Christ actually born? Could it lead to a new understanding of Jesus' story?

Dakota leads Chelsea, Tanner and Alex to a decaying sanatorium where some patient corpses were unclaimed due to a flu pandemic.

The team explore one of America's oldest bourbon distilleries. It was the site of barbaric working conditions that led to the demise of many workers.

In Siberia, Josh Gates investigates the strange and brutal cold case of the Dyatlov Pass Incident, where nine Soviet hikers died suspiciously in 1959.

In 1949, priests were left terrified by a boy who claimed to be possessed by the devil. Investigators share shocking secrets about this chilling case.