Ana Estevez says that soon after she filed for divorce from her husband of eight years, Aramazd Andressian Sr., she knew they would be in a heated custody battle over their 5-year-old son, Aramazd “Piqui” Andressian Jr. She says her ex filed for an emergency hearing and claims he lied to the court, saying he was a stay-at-home dad so she was forced to pay child and spousal support. And, she claims her ex forced her son lie to police about being molested by a person he claimed was Ana’s boyfriend.

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“The way he did it is he threatened my son repeatedly by telling him that he would never see mommy again if he didn’t say these things,” Estevez tells Dr. Phil in an exclusive interview airing Tuesday. “The next day, the police were at my door.”

WATCH: How Woman Says She Learned Ex-Husband Lied To Her For Years

Hear how she claims the lie was perpetrated in the video above. And, hear what Ana claims happened when she told her side of the story to the police and the Department of Child and Family Services.

Months later, Piqui mysteriously disappeared after a trip to Disneyland with his father. Andressian Sr. eventually admitted to murdering his son and has been sentenced to 25 years to life in prison. On Tuesday’s episode, hear more of Estevez’s story, and why she says she believes she was let down by the court system. Check here to see where you can watch.

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Ana Estevez Describes What Happened When She Attempted To Get A Restraining Order Against Ex Aramazd Andressian Sr.