In 1996, Justine and Jim were charged in the sexual assault and exploitation of their then 13-year-old biological daughter, Amanda. They later pleaded guilty and were sentenced to 20 years in prison, each.

“My parents forced me to have sex with them,” claims Amanda in the video above. She says the abuse started when she was around 11.

WATCH: Sexual Abuse Survivor Says Biological Mom ‘Refuses To Acknowledge’ Any Significant Part In Molestation

Amanda says Justine photographed and videotaped herself and Jim having sex with her. She also says, “they constantly rewarded me with things that I wanted,” in exchange for her silence.

WATCH: ‘I Didn’t Know This Wasn’t Something That All Parents Didn’t Do,’ Says Sexual Abuse Survivor

Amanda’s parents both admit they had sex with her, but when Amanda sits down with her biological mother on Wednesday’s Dr. Phil, Justine explains why she claims what happened to Amanda wasn’t entirely her fault.

WATCH:'I Hate Myself For What I Did,' Says Woman Who Admits To Molesting Her Own Daughter

Then, on Thursday’s show, Amanda’s biological father, Jim, explains to Dr. Phil why he says he had sex with his own daughter.

Check here to find out where you can watch Dr. Phil.