In 1989, Patricia and David Stallings moved to their dream home in Hillsboro, Missouri. There they had their first child, Ryan, whose health took a turn for the worse by the time he was five months old. Ryan had a series of blood tests, which showed unusually high levels of ethylene glycol, a main ingredient in antifreeze. Patricia Stallings was arrested, and a few days after, Ryan Stallings died. While in prison, Patricia was admitted to the hospital, and gave birth to another son, David. David suffered from the same symptoms as his dead brother Ryan, but was not in Patricia's care at the time. After re-testing both Ryan's and David's blood, results showed there were no evidence of ethylene glycol. Patricia Stallings was released on July 30, 1991, for a crime she never committed. It was determined that both children had a rare genetic disorder called Methylmalonic acidemia.