On December 13, 2001, a home invasion forced 35-year-old Tracey Roberts to act in self defense in order to protect her 3 kids. After a terrifying attack, she looked at the man she had just killed and realized she knew him, but had no idea why he would want to hurt her or her family. As it turns out, there were a few possibilities of who could have put him up to this, but it took 10 years and a chatty friend to make an arrest.