A 'serial killer' called into a radio and shocked everyone by giving out gruesome details in the chilling audio.
The incident occurred on the The Howard Stern Show and Stern himself has never been shy of sparking controversy on the airwaves.
But not even he could imagine what was in store when an anonymous caller phoned in.
Taking place in 1997, it’s one of the show’s most chilling episodes when Stern spoke to a man who called himself “Clay” on the air.
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Clay terrified listeners when he claimed that he had brutally murdered 12 women, calmly explaining why he kills people.
The conversation started off with Clay saying that he murdered women because he gained a “sense of power” from it.
He said: “I wanted to baffle people, but it turned out that no one noticed for a long time.
“I never sent the clues, I never left anything, you know, I wanted to add my little signature.”
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He went on to claim that he hadn’t committed murder in almost a year.
When the host asked if he planned on taking his own life, Clay said: “If I killed myself, I'd miss the next Batman movie.”
Chillingly, he then went on to explain why he hadn't murdered another woman in almost 12 months.
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“I really don't know, Howard. Part of it had to do with my car broke down,” he said. “Well, that was the reason for a month, but after that, I guess it was all self-control.”
Howard then asked him if he still wanted to kill women, to which Clay replied: “Sure.”
The caller was then probed about his background, saying he had not been abused as a child and that he now had a ‘couple of kids’ but was not married to the mother.
The very dark conversation continued with Stern and producer Robin asking Clay whether he enjoyed watching the women struggle, and how he did it.
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“Actually none of them really struggle,” he said before Stern interjected to ask why he uses a hammer.
Some people have theorized that the mystery caller could be convicted killer Russell Ellwood.
According to Criminal Minds, the former taxi driver was charged with the murder of 30-year-old Cheryl Lewis, one of 26 women, many of them sex workers, who had been found dead in areas around New Orleans between 1991 to 1996.
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Ellwood was sentenced to life in prison, and while this was for the one murder authorities could pin him on, at the time of his arrest in 1997, he was suspected of being responsible for up to 15 of the killings.
But the true identity of Clay has never been confirmed so - as to who he is and whether he really did murder anyone - it remains a mystery.