Ronald Hawkins and Candace Sims exclusively open up about their son, Robbie, for the very first time. In December 2007, Robbie killed nine people - including himself - in a mass shooting at a mall in Omaha, Nebraska. Eight years later, Hawkins and Sims share their intimate insights and personal experiences from throughout Robbie's life, detailing everything from their past attempts to help him, to that awful day he committed a crime that shook the nation.