grown men by society's standards they were thugs, but they were actually reduced to tears because leslie vaughn in that box, about to be put in the ground. >> the vaughn family told police they were getting harassing telephone calls in the weeks before the murder. >> the family would pick the phone up and nobody would say anything. they were just dead air. >> unfortunately, phone records couldn't determine the origin of the calls. for investigators, the first task was to eliminate the victim's wife, madelyn, as a possible suspect. hospital records confirmed she was working on the night of the murder and had never left the premises. >> madeline was -- she was grieving. she was stunned. she was in shock. she was all the things that you would expect her to be. >> and, remember, i showed you the pictures of leslie and madeline and they looked real happy. does that look like a picture of somebody knocking each other out? i mean, that's what i saw. >> on the night of the murder, as a matter of routine, police swabbed brian vaughn's hands for gunpowder residue, since he was in the house when the crime