Discover the truth behind one of society's most clandestine institutions. Hidden within these bordellos are secrets about famous patrons, governments, and even religion.

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.

Hidden inside the world's castles and mansions are secrets waiting to be revealed. What remarkable tales of mystery and adventure transpired within their walls?

Hidden inside the world's castles and mansions are secrets waiting to be revealed. What remarkable tales of mystery and adventure transpired within their walls?

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.

Former Colorado law enforcement officer Chuck Zukowski and his son Daniel investigate UFO-related cases that the authorities usually ignore. They search for definitive proof of UFOs along America’s infamous Alien Highway.

Former Colorado law enforcement officer Chuck Zukowski and his son Daniel investigate UFO-related cases that the authorities usually ignore. They search for definitive proof of UFOs along America’s infamous Alien Highway.

Don Wildman unearths dummy heads that helped inmates escape from Alcatraz. Plus, he examines the medical mystery surrounding a pair of conjoined twins.

Don Wildman investigates the disappearance of Amelia Earhart. Plus, he uncovers a video camera that captured UFOs in the Arizona night skies.

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.

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.

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 Holzer Files is an American paranormal television series following a team of ghost hunters as they investigate cases documented by the late Hans Holser.

Don Wildman recounts a tragic expedition. Plus, he reveals evidence suggesting that Harry Houdini was murdered and investigates a shapeshifting creature.

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

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.

The Holzer Files is an American paranormal television series following a team of ghost hunters as they investigate cases documented by the late Hans Holser.

Don Wildman investigates the disappearance of Amelia Earhart. Plus, he uncovers a video camera that captured UFOs in the Arizona night skies.