. >> when sheriff ellis walked up to the podium, he looked at teresa's mother reba and vowed he'd get justice yet. >> ms. reba, i won't quit until we find out what happened to ms. teresa. >> and in fact, even as he spoke, the sheriff along with the corporal will chasing down their first honest to god lead in what, over a year? didn't seem like much, not at first, just an overheard story from a guy in a bar, something about how he and a friend ran into someone with a gun, not so terribly uncommon, mind you, except that it happened around the same time and not very far away from where the murder occurred. so ellis and boyd tracked the kid down and he remighted the story for them. >> they were on a dirt road. and they came upon a snake, a rattlesnake. and they was trying to kill it, find something to kill it with. >> trouble was, they were plumb out of rattlesnake killing tools, and that's when a suv just happened to pull up on the dirt road behind them. the driver was a woman in her 40s or thereabouts who, said the young man, offered them a surefire way to dispatch that rattlesnake. >> lady in the car had