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.

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.

Don Wildman reveals the shocking truth behind an insect-like monster and the tale of the vengeful spirit that haunted the infamous mobster Al Capone.

On the outskirts of Anaconda, Mont., sits Gunslinger Gulch -- a sprawling ghost town and guest ranch made up of various historic abandoned buildings salvaged from across the state

A family are settling into their new home when a neighbour warns them about strange creatures in the woods. What is out there?

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.

One of the most passionate paranormal teams in America, the Tennessee Wraith Chasers, are in Missouri to investigate a haunted and abandoned asylum.

Paranormal investigators Jack Osbourne and Katrina Weidman travel the world to explore the sinister locations associated with being gateways to the underworld.

A family are settling into their new home when a neighbour warns them about strange creatures in the woods. What is out there?

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.