The paranormal activity in the Mayflower Building ramps up as the Ghost Hunts USA team digs deeper to try to make contact with the entities that still roam the corridors of Pennhurst Asylum.

The Tennessee Wraith Chasers have investigated some truly terrifying places but these asylums stand out as some of the most haunted.

The Tennessee Wraith Chasers have investigated some truly terrifying places but these asylums stand out as some of the most haunted.

The Tennessee Wraith Chasers have investigated some truly terrifying places. Now, we count down their top five haunted prisons.

The incredible story of a UFO encounter that occurred in the air above Alaska when an experienced Japanese flight crew spotted a mysterious aircraft.

Wolfe County, Kentucky has a fresh trail of evidence that a 500 pound Wolfman is terrorizing the region. Now a group of expert hunters and trappers are using their backwoods knowledge to catch the Wolfman and make Appalachia safe once again.

The AIMS from Mountain Monsters tell us why they don't have to travel far to hunt monsters.

Catch up on the best evidence presented throughout DA's Mountain Monsters!

Catch up on the best of Bigfoot from DA's Mountain Monsters!

Countdown the top five best Mountain Monster encounters!

Discover the most terrifying monsters that appeared to the guys throughout the series Mountain Monsters.

Catch up on the best monster sightings throughout Mountain Monsters!

Nick and Katrina investigate the abandoned and haunted Trans-Allegheny Lunatic Asylum in Weston, West Virginia. What Nick and Katrina capture on their third night of confinement can only be described as groundbreaking and completely terrifying.

Nick talks about his experience in the body chute and shares raw, never before seen footage from the Lockdown archives.

Nick reflects on his experiences in the Bellaire House and shares exclusive raw footage from the investigation.