Known as the Candy Man and the Pied Piper, Dean Corll sexually assaulted and murdered at least 28 young men and boys in the Houston area between 1970 and 1973.

Over four nights in August 1990, Danny Rolling viciously murdered five college students in Gainesville, Florida — and after he was caught, police discovered these weren't his first killings.

Anatoly Moskvin was considered an expert on local cemeteries in Nizhny Novgorod, Russia — but it turned out he was digging up deceased children and transforming them into "living dolls."

Over a 12-day period in July 1916, four people were killed and a teenage boy was severely injured by shark attacks in New Jersey that caused these sea creatures to forever be thought of as vicious "man-eaters."

On April 28, 1945, Benito Mussolini was executed while trying to flee to Switzerland as Allied forces approached northern Italy, and an angry mob later mutilated his corpse in a public square in Milan.

On August 28, 2003, pizza delivery man Brian Wells was forced to rob a PNC bank in Erie, Pennsylvania — or else be blown up with an explosive collar.

Not only did Sean Vincent Gillis brutally murder eight women between 1994 and 2004, but he also dismembered them, raped their corpses, kept body parts as souvenirs, and cannibalized their remains.

A group of ancient Mesopotamian gods, the Anunnaki are also sometimes theorized to be a race of prehistoric aliens who came from the planet Nibiru.

The mythic warrior who taught the legendary hero Cú Chulainn how to fight, Scáthach is one of the most fearsome figures in all of Irish mythology.

Known as the Dover Demon, an eerie cryptid with glowing orange eyes and no mouth was allegedly spotted in Dover, Massachusetts in April 1977.