>> which brings us to this woman, patricia springboard. the woman who accused matt of rape. remember he went to prison, attempted sexual assault but convinced the nelsons she was lying. it was no lie. when patricia heard about jessica. >> that's the hardest thing for me. because it never should have happened. >> because you already warned everybody about him. >> yep. >> her experience with matt at first was not unlike the nelsons'. >> he wormed his way into our family and none of us thought would do anything like that. >> he was a good friend to your family, too. >> yes. i met him through my oldest daughter. >> wow. >> yeah. my husband taught him how to drive a truck. things like that. things that you would do if we had a teenage boy. >> sure. >> then one day he caught her alone at home and grabbed her neck and tried to choke her and she, fearing he would kill her, stopped struggling and discovered something revealing