>> guilty, your honor. >> a guilty plea. confirming what jaclyn had pieced together over the years of her investigation. and she had a theory about how it all went down. >> march 10, annie is discussing over the phone what her options are for her baby with chris. and chris is telling her, he's come up with a plan and they can runaway and be together. >> jaclyn think chris believed annie was pregnant. so he persuaded him to meet her at the river. >> but. >> chris has no intent on running away. chris' only reason for being there is to kill her. so he just starts beating her until she dies. >> turns out to be very sloppy, the amount of blood. >> i feel he betrayed annie more than he betrayed us. annie knew him and annie trusted him. >> at his sentencing, chris now