Existence (and probable but not proven identity) discovered over 100 years after the murders, by analysis of contemporary records, showing a markedly common modus operandi for many previously unconnected crimes.

On his website, he joked of his employees: "[W]e threatened not to feed them if it didn't work.

Its [sic] amazing the motivation you can get after day three!

But there was one element of his past would never completely go away.

In 1986, at age 15, Kohlhepp was accused of kidnapping and raping a 14-year-old girl in Arizona, and served 14 years in prison.

In that meeting, she said Kohlhepp told her that he shot Carver "because he got nasty and smart-mouthed," and that he couldn't let Brown "loose" because "she'd go get the police."It seems few people truly understood Kohlhepp's propensity for violence before this point, and even fewer were in a position to address it.

In fact, since his dark teen years, Kohlhepp appeared to live something of a normal life.

Both had been shot, and it was later revealed Kohlhepp met them through house cleaning work, just like Brown.

Despite all these revelations, Kohlhepp's mother, Regina Tague, insisted to CBS last Friday that her son is not a "monster" – though in the same breath, she said he admitted his crimes to her during a meeting arranged by the Spartanburg County Sheriff's Department.

During their meeting last week, Tague said she asked her son if he was responsible for the killings at the shop, where she claimed he once felt embarrassed by the staff when trying to learn to ride a motorcycle.

When the shop wouldn't give him a refund, she says, he decided to extract revenge, she said.

" But shortly after his November 3rd arrest, it emerged that Kohlhepp had more than a twisted sense of humor.