Top 15 most terrifying serial killers in history of the world – Their evil deeds will leave you in a big shock! (With Pictures)

14. John Wayne Gacy – 33 Murders

The Killer Clown or John Wayne Gacy is a popular serial killer from America. Stationed in Chicago, John was a pedophile with an appetite for murder. By putting on some makeup and dressing as a clown, Gacy could easily lure children away to secluded locations and do unfathomable things to them and eventually burying their bodies under his home. But by 1980, the clown was caught and the gig was up. Being found guilty to more than 30 murders, John was sentenced to death. He was killed by lethal injection 14 years later. SEE ALSO: 9 Terrifying facts about vampires (With Pictures)