Kala Brown and her boyfriend, Charlie Carver, were allegedly kidnapped by Todd Kohlhepp on August 31, 2016. Kohlhepp, a local realtor, registered sex offender and now suspected serial killer, allegedly took the couple captive on his isolated South Carolina property, where they had come after being hired to clean up one of the buildings.

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In the video above from Brown’s exclusive interview airing Monday on Dr. Phil, the 30-year-old explains that she met Kohlhepp on Facebook while she was searching for additional work.

“Todd contacted me and said that he would pay me to clean his houses,” says Brown, who estimates that she cleaned about five houses over a three-month period.

Brown says before the day of the alleged kidnapping, she would usually pick up keys from Kohlhepp and drive to the empty houses on her own. She says he always had a check ready for her when the job was done.

WATCH: Kala Brown Claims She Watched Boyfriend Charlie Carver Get Killed In Front Of Her

“He was nice, polite, just regular businessman, nothing inappropriate or anything like that,” Brown says of Kohlhepp.

But Brown says that changed the day she and Carver went to Kohlhepp’s property. She claims shortly after they arrived, Kohlhepp shot Carver three times killing him, and then chained her and locked her in a storage container, where she says he left her for the next two months until she was found.

WATCH: Kala Brown Tells Her Story Of The Day She Was Allegedly Kidnapped By Suspected Serial Killer Todd Kohlhepp

On Monday, Brown speaks out for the first time about her life in captivity. And on Tuesday, hear what Kala claims Kohlhepp planned for their future together. Plus, Kala says she believes she wasn’t the first woman Kohlhepp held prisoner. Hear why she believes another woman came before her. Check here to see where you can watch.

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Woman Describes What She Claims Happened In Storage Container Where She Was Allegedly Held Captive By Suspected Serial Killer For Two Months