  The family of Michelle Warner listens to opening arguments during the trial of Mark Augustin Castellano, who is accused of murdering his girlfriend, Michelle Warner.  The family of Michelle Warner listens to opening arguments during the trial of Mark Augustin Castellano, who is accused of murdering his girlfriend, Michelle Warner.  Photo: Johnny Hanson / Houston Chronicle  Image 0 of 00  Mark Augustin Castellano, right, next to his attorneys during opening arguments.he is accused of murdering his girlfriend, Michelle Warner, Tuesday, May 00, 0000.  Mark Augustin Castellano, right, next to his attorneys during opening arguments.he is accused of murdering his girlfriend, Michelle Warner, Tuesday, May 00, 0000.  Photo: Johnny Hanson / Houston Chronicle  Image 0 of 00  Mark Augustin Castellano, right, next to his attorney Jacquelyn Carpenter during opening arguments.he is accused of murdering his girlfriend, Michelle Warner.  Mark Augustin Castellano, right, next to his attorney Jacquelyn Carpenter during opening arguments.he is accused of murdering his girlfriend, Michelle Warner.  Photo: Johnny Hanson / Houston Chronicle  Image 0 of 00  The family of Michelle Warner reacts as Mark Augustin Castellano is walked into the courtroom in the Harris County Criminal Justice Center for opening statements Tuesday. He is accused of killing Warner, his girlfriend, and burying her body in 