These are the chilling cases of law enforcement officers facing monsters no training could ever prepare them for. From the terrifying "Beast of LBL" to a Bigfoot encounters in Oklahoma and Washington State.

From training grounds to war-torn battlefields, a growing number of soldiers report encounters not with enemy combatants - but with something beyond the known world.

These are the chilling encounters of people who trespassed into the domain of the unexplained - and paid the price.

These are the chilling accounts of people who claim they were hunted by mysterious cryptids. From a Dogman in Ohio, a group of Bigfoot in Washington state, a Skunk Ape in Florida and a mysterious Wendigo in Wisconsin.

These are terrifying encounters with cryptids and the paranormal that didn't happen by accident - they began with one grave mistake that turned curiosity into a nightmare.

Our homes are meant to be sanctuaries - places where nothing can harm us. But sometimes, that sense of safety is shattered by something sinister. From "The Grassman" in rural Ohio, to the Spotsville Monster in Kentucky, to the haunted house of Amityville fame, the "Fouke Monster" in Indiana and a young girl's bizarre time slip, these witnesses have their sense of security smashed by the unexplained.

Hotspots of unexplained activity exist across America - specific regions where encounters with unknown creatures and supernatural forces seem to repeat again and again. From the famed Skinwalker Ranch in Utah, to the monstrous Mothman in Point Pleasant, West Virginia, to the Texas Dogman Triangle, the Bigfoot that calls the Klammath mountains of California home, and the numerous possession accounts that haunt Pittsburgh.

These are the terrifying accounts of people who claim they were stalked, attacked, or even taken by threats from beyond our world.