“I was sexually, physically, emotionally abused by my biological father, Lindolfo Thibes,” says Tatiana. “I was my dad’s sex slave; anything he wanted, I had to do.”

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Tatiana says that the abuse by her father started at age 6 and continued for 19 years. She claims he was on drugs and “paranoid”, and “fed” her drugs and alcohol before violating her.

“My dad made me lure men to the house to have sex with me so he could watch,” Tatiana claims. “When I was about 15 years old, it became routine. But the times that I would not bring men back, he would beat me up and say that I was lying, that I didn’t try.”

WATCH: 'Where Was Your Mother?' Dr. Phil Asks Woman Who Was Sexually Abused By Father And Gave Birth To Three Of His Children

Tatiana says she was a “prisoner” in her home which was filled with cameras and sensors that could spot her every move.

“I never tried to escape. I wish I did. He threatened to kill me,” she says. “Plenty of times, I contemplated hurting him but I was just so scared of the unknown, and I just gave in.”

Hear more of Tatiana’s harrowing account of her childhood in the video above. And on Friday’s episode of Dr. Phil, hear what Dr. Phil calls the “worst” part of Tatiana’s story. Check here to see where you can watch.

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'I Have Three Children With My Father'