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.

Real monsters are behind our greatest legends. This episode takes us into the belly of the beast to find the surprising truths behind history's most mythic cannibals and killers. Does a banshee born during the Revolutionary War still curse the North Carolina woods? Plus, a medieval clan of cannibals out for blood in 16th century Scotland, and did a fairy tale villain named Bluebeard inspire a notorious Chicago World's Fair serial killer? And, could real zombies walk among us, created by a potion from puffer fish?

Real monsters are behind our greatest legends. Greek and Norse mythologies are the source of epic tales of gods and monsters battling it out to rule the world. But could any of these celebrated heroes and villains have been real?

Real monsters are behind our greatest legends. Stories of giants and beasts permeate our past and fascinate us in the present. From the Bible's Goliath to the Cyclops of Greek mythology, our colossal adversaries inspire tantalizing tales of terror.