Moore's biological father, Charles Harmon, left her mom Virginia King before her birth in 1962. Then in 1973, he fathered a son with another woman and named him James Craig Harmon.
Harmon was arrested in December 2005 and charged and found guilty with aggravated assault after attacking his girlfriend Tasha Marie Lee in a Houston motel.
Lee, seen here, told RadarOnline.com exclusively, "I really thought I was going to die," that fateful night in October 2005. "He had a knife. He grabbed it and told me: ‘If you want to be a wh*re, I'll treat you like a wh*re.'"
The incident left her battered and bruised, she said. "He cut my pants, then cut my face and my hands," Lee, 32, claimed. "The more I tried begging him to stop, the worse it got. I tried screaming for help – and that's when he picked up the telephone and began hitting me over and over again. He hit me so hard so many times the phone broke. He told me it would be easy for him to slit my wrists and fill the bathtub up with my blood and make it look like suicide. I wasn't waiting to die. I was just hoping someone would save me."
Harmon, now 41, served eight years of a 10-year sentence, and was released from prison in 2013. His incident with Lee began after a fight at a nightclub, she said. "He was jealous of everybody, and we ended up arguing. I went for a walk across the street and sat, waiting for him to calm down. I saw him leave in his truck, so I went back to the motel room and fell asleep," she claimed. After the attack, Harmon later asked Tasha to blame her beating on a gang of African Americans, she said – a foreshadowing of the racism he exhibited after being sentenced to prison.
"He's very violent, and Demi's only safe from him because she doesn't have to see him," Lee said. "If she had a relationship of any kind with him today, it wouldn't end well."
In 1991, he was charged with theft by receiving. The case was later disposed.
"As soon as he got into prison, he was asking me to send him information about the Aryan Brotherhood. I refused," Tasha claimed. "I was really young, so I've grown up a lot. I was broken, I was lost, and luckily I survived."