didn't need a search warrant to look inside michelle's trunk. michelle and brandon eventually turned on one another. brandon said michelle was the one who killed devon, and michelle said it was brandon. >> there was a witness that we called at trial that said about 30 or 40 days prior to this, he had been solicited by michelle that she would give him sex or money or both if he would take out and kill devon, that she wanted to get rid of her. >> in the end, brandon bloss and michelle hetzel were both convicted of devon guzman's murder. they were both sentenced to life in prison. had it not been for the forensic evidence, an innocent person might have been punished, and the guilty may have gone unidentified. >> but for the science we would not have made an arrest in this