an unlikely witness came forward with a story of her own. >> there was a lady who was in her vehicle that had been stopped for a traffic violation, and she knew something about the case. >> i think i know who may have killed her. >> her name was barbara hilton and when she was with police, she told them something she had kept to herself for the past several weeks. she said she knew jeff thomas, and he had been staying at her house at the time of tara munsey's murder. on the night of the murder, thomas returned home visibly agitated. >> what happened? you're all muddy. >> he was dirty, he was muddy, he was upset and he told her that he had messed up.