When you think of infamous American serial killers you immediately think of the likes of Ted Bundy, Jeffrey Dahmer and John Wayne Gacy.
While they were no doubt sick, twisted individuals, there is a new name that you should be aware of.
The FBI has just declared Samuel Little as the most prolific serial killer in American history, with his body count tipped to be more than 90.
He was convicted of three murders in California between 1987 and 1989 and one woman in Texas in 1994 and has been serving three consecutive life sentences.
However, during his time behind bars, he's confessed to killing 93 people and the FBI believes each case is credible.
FBI Violent Criminal Apprehension Program Crime Analyst Christie Palazzolo said: "For many years, Samuel Little believed he would not be caught because he thought no one was accounting for his victims.
"Even though he is already in prison, the FBI believes it is important to seek justice for each victim-to close every case possible."
Disturbingly, the crimes weren't concentrated in one area but were committed across the country.
Wise County Sheriff's Office announced he had provided private investigators details on a 'multitude' of murders which he claims to have carried out in Texas, Florida, Georgia, Kentucky, Tennessee, Mississippi, Louisiana, Illinois, Ohio, California, Indiana, Arizona, New Mexico and South Carolina.
A map released by the FBI shows 'victims who have not yet been identified (Jane Does) or to murders described by Samuel Little that have not yet been definitively corroborated by law enforcement'.
To add an even creepier element to the story, Little has drawn portraits of his victims, or at least what he remembers of what they looked like.
His alleged crimes were unearthed in a Channel 4 documentary where Little confessed to murdering more people than he was convicted for.
In the confession, taped by police, he said: "I try to trace back to when I became attracted to a woman's throat."
The documentary, titled Confessions of a Serial Killer, directed by film maker Benjamin Zand, were the first time his confession tapes have been heard.
Giving a clue to how he got away with such crimes, for so long, he explains: "I didn't take chances. I didn't have nobody with me and I pick on motherfuckers that wouldn't be missed. That's why I didn't get busted a long time ago.
"I didn't waste no time digging bodies. I got so crazy I wanted more. That's a curse that I have got."
The FBI is now looking for people to help their investigation into confirming Little was responsible for murdering the women he says he's responsible for.Featured Image Credit: PA