The trial of the world's most notorious drug trafficker best known as "El Chapo" began with opening statements in a New York federal courtroom Tuesday. Nancy Grace digs into the case against Joaquín Archivaldo Guzmán Loera with an expert panel including Southern California prosecutor Wendy Patrick,  psychologist Caryn Stark, lawyer Jason Oshins, forensics expert Karen Smith, and reporter Robyn Walensky. She also updates the case of Colorado dad Chris Watts, who admitted a week ago that he murdered his pregnant wife and their two young daughters. Watts' parents gave an interview this week in which they express disbelief that their son would have killed the children and they suggest the wife had a role.