Here's everything you need to know about these bizarre and horrifying creatures.

In 18th century France, the region of Gévaudan was terrorized by a bloodthirsty creature.

A monster, like a devil, flew up through the trees and disappeared behind the church.

They say it lurks in the water, and has a taste for human flesh ...

Haunting the riverbanks of Loveland are sightings of a mysterious creature with leathery skin and a gaping mouth.

In the woods of Ohio are dark tales of a mad doctor and the mutant descendants of his horrific experiments.

Across the rugged country of southern England roams a mysterious beast known to devour anything it encounters.

This lonely ranch in Utah is haunted by ghostly voices, strange sightings, and UFO encounters.