An Indiana father who adopted a six-year-old Ukrainian girl with his wife 2010, only to then come to believe she was an adult dwarf set on harming them, has claimed she threatened to kill someone in their home. Michael Barnett says Natalia Grace told him: 'I promise you within five years someone is dead.' He has spoken out in a new documentary entitled The Curious Case of Natalia Grace, which will be released in three parts on Investigation Discovery (ID) starting on May 29. Barnett and his wife, Kristine, petitioned to have Natalia Grace's birth certificate changed and a judge...