When it comes to the most terrifying figures of true crime fame, there's a handful of nasties that immediately come to mind. Charles Manson. Ted Bundy. John Wayne Gacy. Their crimes — and their lives — are the stuff of widespread fascination, because there's something in all of us that just wants to know how someone could do these horrible things. And then, there's Ed Gein

The Co-Ed killer Edmund Kemper, Kemper was a cunning serial killer who raped corpses, mutilated dead bodies, and buried his victims’ heads in his backyard. His high IQ of 145 only made him more dangerous — as he used his intelligence to slip away from his crime scenes undetected.

A monster of a man who killed with malice and a changing demographic. He bludgeoned and mutilated his victims killing 13 victims over 17 years. Like many serial killers he started out with arson, but unlike many he was a bully from a young age probably due to his size and the availability of victims. WARNING: Some content may disturb.

David Berkowitz was a frightening person in New York because he was random meaning that anyone could die any time. While no murder or serial killers are acceptable, the randomness of some killers is like a virus, we get scared because it could happen to anyone regardless of the life they live. You only need to be in the wrong place at the wrong time.

David Berkowitz was a frightening person in New York because he was random meaning that anyone could die any time. While no murder or serial killers are acceptable, the randomness of some killers is like a virus, we get scared because it could happen to anyone regardless of the life they live. You only need to be in the wrong place at the wrong time.

Charles Manson created a cult called The Family, using drugs, and coercion he managed to build up a following with some of them being prepared to commit murder in his name while he himself killed no one.

When Tim Anderson murdered his promotional manager he set a ball in motion that left a lot of questions about the legal system, criminal activities and the likability of a killer.

Perth Australia in the 60s was a placid and friendly place but that all changed when The Night Caller decided to kill and maim without predjudice through two nights of madness a few months apart.

After taunting the police, torturing victims and basically enjoying his success as a serial killer, Dennis Rader was the most arrogant of killers who made one of the more stupid mistakes one has heard of, this lead to his capture.

His cruelty and need for attention ended up being his undoing, Dennis Rader or BTK kept his victims alive while torturing the, making sure that their last hours alive were consumed by his presence and the fear he induced.