When investigators found a South Carolina woman disheveled and chained up in a large shipping container, they did not know they had uncovered a serial killer now convicted of seven murders.

Local real estate agent Todd Kohlhepp held Kala Brown captive for a grueling 65 days. After she was reported missing for over two months, investigators found Brown on Kohlhepp's property and learned he had killed Brown's boyfriend, 32-year-old Charlie Carver. 

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What started with investigators following up on a tip regarding a potential sex crime turned into a shocking case. 

"I never dreamed this investigation would turn out like this. I thought, how many more has he killed?" Anderson PD retired detective Charlynn Ezell said in Fox Nation's "The Amazon Review Killer."

The new two-part special details a chilling tale of a killer hiding in plain sight, with online comments linking Kohlhepp to his brutal crimes. 

The shipping container where Brown was held for over two months pointed investigators to Kohlhepp's review of padlocks on Amazon. 

"He had posted all of these very cryptic comments about them," FOX Carolina reporter Brookley Cromer said in the Fox Nation special. 

"People thought that they were these funny reviews, but it's kind of crazy when you think about it, that this was actually what he was buying these items for."

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"It was almost as if Todd's Amazon reviews were foreshadowing the murders he was committing," investigative journalist Melkorka Licea added.

Brown was found alive on Nov. 3, 2016 in a large container at Kohlhepp's 100-acre compound. Investigators asked Brown, "Do you know where your buddy is?" referring to her boyfriend, who disappeared with her on Aug. 31, 2016.

"Charlie?" Brown answered in the archival video from her rescue. "He shot him," Brown affirmed, while still in restraints. "Todd Kohlhepp shot Charlie Carver three times in the chest. He wrapped him in a blue tarp, put him in the bucket of the tractor, locked me down here — I’ve never seen him again."

Kohlhepp would ultimately plead guilty to the murders of Carver and six others over a 13-year span and would be handed seven consecutive life sentences without the possibility of parole.

For more on Kohlhepp's horrifying crimes, catch the Fox Nation special "The Amazon Review Killer," now streaming. 

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Fox News' Julius Young and Stephanie Nolasco contributed to this report.

"Hillbilly Elegy" director Ron Howard said that he was "very surprised and disappointed" by GOP vice presidential nominee JD Vance’s political rhetoric after not knowing about the candidate’s political beliefs.

The two-time Academy Award winner Howard recalled that he and Vance did not discuss politics during the development of the film.

"Well, we didn’t talk a lot of politics when we were making the movie because I was interested in his upbringing and that survival tale," Howard told Deadline at the Toronto International Film Festival.  

He continued, "That’s what we mostly focused on."

"However, based on the conversations that we had during that time, I just have to say I’m very surprised and disappointed by much of the rhetoric that I’m reading and hearing," he added. "People do change, and I assume that’s the case. Well, it’s on record."

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"Hillbilly Elegy" was released in November 2020 on Netflix.

The movie shows the uprising of a young boy raised in a humble Appalachian town and ascending to Yale Law School. The movie was adapted from "Hillibilly Elegy: A Memoir of a Family and Culture in Crisis," which was written by Vance in 2016 and became a New York Times Bestseller.

The movie starred Amy Adams, Glenn Close and Gabriel Basso.

Vance is a venture capitalist, author and politician. The author-turned politician defeated his Democratic opponent, Tim Ryan, in Ohio’s Senate race in the 2022 Midterm elections.

The "Happy Days" star Howard doubled down that Vance never mentioned his political views. He went on to say that "that was then," yet apparently the Ohio senator and running mate of former President Donald Trump clearly changed.

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"When we spoke around the time that I knew him, he was not involved in politics or claimed to be particularly interested," Howard said. 

Since jumping into the 2024 presidential race, Vance has caught flak for a resurfaced 2021 comment, when he said that "we're effectively run in this country via the Democrats, via our corporate oligarchs, by a bunch of childless cat ladies."

The senator, however, says that the statement was taken out of context. 

While Vance continues to defend himself, Democrats have criticized the comment since he was selected as Trump's 2024 running mate.

Transportation Secretary Pete Buttigieg called it "offensive," while Oprah Winfrey highlighted it in her speech at the Democratic National Convention.