Experts and eyewitnesses try to unlock the mystery of the Alaska Triangle, a remote area infamous for alien abductions, Bigfoot sightings and paranormal phenomena.

Experts and eyewitnesses try to unlock the mystery of the Alaska Triangle, a remote area infamous for alien abductions, Bigfoot sightings and paranormal phenomena.

Could there be life beyond our planet? Extraordinary NASA footage and ground-breaking interviews with astronauts and scientists investigate potential sightings of UFOs.

Could there be life beyond our planet? Extraordinary NASA footage and ground-breaking interviews with astronauts and scientists investigate potential sightings of UFOs.

Investigators, scientists and experts use cutting-edge technology to decode the unexplainable and try to solve the most shocking and infamous disappearances in history.

Could there be life beyond our planet? Extraordinary NASA footage and ground-breaking interviews with astronauts and scientists investigate potential sightings of UFOs.

A team of outdoorsmen is taking on the challenge of exploring the Alaska Triangle to uncover proof of the cryptic creatures thought to be living there.

Paranormal explorer Dakota Laden takes his sister and best friend on a cross-country road trip to face their fears at the most haunted locations in America.

The series features the Tennessee Wraith Chasers, a group of professional paranormal investigators that are known for trying to "trap ghosts" during their investigations.

Nick Groff and Katrina Weidman spend 72 hours confined to the most haunted locations in the United Kingdom in search of groundbreaking evidence of the paranormal.

A couple's hopes of a dream life in the California mountains are ruined when they stumble upon a satanic site.

They may be known as the first family of darkness, but legendary rocker Ozzy Osbourne and his wife, Sharon Osbourne, are borderline skeptics when it comes to the paranormal. Determined to convert his parents into full-fledged believers, Jack Osbourne shares the craziest, most jaw-dropping supernatural activity ever caught on camera.

Police officers, paramedics and other first responders reveal their true encounters with the paranormal while on duty. Not only do these cases defy explanation, they terrify even the most seasoned of men and women who have devoted their lives to serve and protect the living.

Museums display the wondrous treasures of the past, and behind each artefact is a story to be told and secrets to be revealed - tales brimming with scandal and mystery, murder and intrigue.

Museums display the wondrous treasures of the past, and behind each artefact is a story to be told and secrets to be revealed - tales brimming with scandal and mystery, murder and intrigue.

A couple's hopes of a dream life in the California mountains are ruined when they stumble upon a satanic site.

A team of outdoorsmen is taking on the challenge of exploring the Alaska Triangle to uncover proof of the cryptic creatures thought to be living there.