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.

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.

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?