We all know about serial killers like Jack the Ripper and Charles Manson but there are some that are virtually unheard of. However, this does not mean that they weren’t as ruthless or heartless- just that they managed to remain in the shadows.

1. John Robinson

According to research, over 11 women have been linked to this serial killer- they are either missing or dead. He carried out these murders over a course of 16 years and made sure that some of them would never be found. Robinson had four children and was passionate about two things- murder and money.

2. Larry Eyler

Larry Eyler attacked his victims and killed them on highways which is why he was referred to as the Highway Killer. He would lure men towards secluded area, beat them up and murder them. His victims were almost always disemboweled. Eyler eventually confessed that he had killed 21 people.

3. Peter Kurten

Kurten killed young women every week during 1929. The bodies would be found horribly mutilated and slashed to death. He confused the police and made it seem like he was helping them find the bodies. This serial killer killed over 30 people but allegedly said that he would have liked to kill more simply because he enjoyed it.

4. Arthur Shawcross

After a brief stint with the army, Shawcross returned to America and married four different women over the years. He started killing young boys and girls in 1972- he would take them to isolated areas and strangle them to death. He spent 15 years in jail after which he started killing prostitutes.

5. Bobby Joe Long

Long would first rape women and then murder them- he took nine lives in 1 year. He was very accident prone when he was growing up and his mother was overly protective of him. By the time he was arrested, he had killed 9 and raped 50 women.