Real monsters are behind our greatest legends. The gates of Hell are unlocked to reveal the surprising truths and devilish secrets of Satan, demons, and other powerful rulers of the Underworld. In the 17th century, a beastly devil is born deep in the woods of New Jersey and is said to still wreak havoc in a place called the Pine Barrens.

A violent killer known as Kuchisake Onna, terrorizes the children who went home after school.