Adoptive parents could face jail time in child’s age dispute

Michael Barnett and his ex-wife Kristine, who claim their adopted daughter was much older than they thought, are accused by the state of Indiana of neglecting her.
3:22 | 10/10/19

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Transcript for Adoptive parents could face jail time in child’s age dispute
We are back with that jaw-dropping story. A couple who says that the little girl they adopted from overseas is actually an adult who has threatened them. They're now charged with neglect for abandoning her. Amy, whoo, this is quite a story. I mean this, is -- when you say it's a bizarre story, that's truly an understatement with all the details now unfolding. The real age of the girl is under investigation right now and the adoptive couple has been accused for neglect for moving out of the country and leaving the girl behind. Now the adoptive father is telling his side. Michael Barnett and his wife Kristine thought they were adopting an adorable 6-year-old girl but this morning, they claim that girl was actually an adult woman who they believe was intent on killing them. We were told by doctors this person is a sociopath. This person is a con artist. You are all in danger. Reporter: It's a story just like the horror movie "Orphan," adoptive parents who believe they are adopting a young girl but who turns out to be much What are you talking about? The picture I sent you is of our adopted daughter and she's 9 years old. No, she's not, she's 33 years old. Reporter: Now Michael Barnett and his ex-wife Kristine could face jail time accused by the state of Indiana of neglecting their adopted daughter Natalia leaving her behind after moving to Canada but according to the barnetts Natalia is not who she says she is. They claim she's an adult and that she was attempting to cause them harm. Natalia would do things like place clear thumb tacks on the stairs face up so that when we would walk up the stairs we would be stepping on thumb tacks to pain and injure ourselves and attempted to kill my wife for the second time trying to pull her into an electric fence. Reporter: She was reportedly 6 when the Barnett as adopted her. She suffers from a rare form of dwarfism and Barnett says they quickly noticed some suspicious behavior including developmental changes consistent with adults. He claims that doctors testing and even a court ruling led them to believe she was actually born in 1989. In 2012, based on evidence presented to the court, the Marion county superior court ruled that her birth year would be changed from 2003 to 1989 effectively changing her from 8 to 22 years old. Reporter: Still there is confusion about Natalia's age. Right now she could be 16 based on her original birth certificate. Or 30 based on the revised certificate but officials believe she was a minor when the barnetts moved out of the country arresting them both. Right, so everyone at home is doing the math and that's what everyone is forced to do in this case so, yes, Natalia is about 30 according to the barnetts but place say she may be 16 or 17 then there's the question of where she is right now. Police have not released any information on that but Michael Barnett says she is living with another family, so some incredibly disturbing details in this case and still a lot of mystery. Yeah. This is like we saw. The movie "Orphan." I saw it way back when. This couldn't actually happen and this is the real life case of it if it is all indeed true. Everybody is shaking their head. Thank you very much, Amy. Coming up, we have the pep

This transcript has been automatically generated and may not be 100% accurate.

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