When Michael Barnett and his wife Kristine adopted a six-year-old orphan from Ukraine 13 years ago they believed she had a rare bone growth disorder.
But all was not as it seemed and now the strange story is the subject of a brand new Investigation Discovery documentary - The Curious Case of Natalia Grace.
In the six-part documentary that will air across three consecutive nights, the adoptive parents will tell how she "masqueraded as a child with intent to harm them" in shocking claims.
