been around for a long time has moundville. but it's a sad truth, as the sheriff says, even here where everybody used to know everybody -- >> it's not that way anymore. so many different people are moving in from around the world. >> trying to escape the crowds. >> well, escape the crowd or running from something. >> yes. and where have you gone, andy griffith? mayberry apparently has up and left us. sheriff ken ellis fights real crime nowadays. >> the crime here is the same crime you see in any large city, just a smaller version. >> still, moundville is moundville and neighbors do tend to know more of each other's business than they might in tuscaloosa, for example, which can be a bit of a nuisance if you need to keep a secret, especially, for example, if your secret is about murder. to begin with, this thoughtful young woman was just a girl of 17 back in '07 when things started coming apart in the way things do when parents don't talk about it. kelsey mayfield saw that troubled look in her mom's eyes, her mom teresa. >> i cou

especially in a little place like moundville.'t take very long for sheriff ellis and corporal boyd to stumble onto a secret scott had been keeping. >> while we was out at the crime scene, scott had had a young lady to come pick up the boys. >> it was only later when the fog of grief had lifted that one of teresa's relatives wondered to police, who was that woman hanging around the day teresa died? ellis and boyd tracked her down, and what they discovered? well, that changed everything, or seemed to. the person they were talking to fog of grief had lifted that one of teresa's relatives wondered to police, who was that woman hanging around the day teresa died? ellis and boyd tracked her down, and what they discovered? well, that changed everything, or seemed to. the person they were talking to was scott's mistress. >> he was under the impression that scott was not married at that time. >> what did you make of that when you heard it? >> we knew that wasn't correct. >> a love triangle? jealous home wrecker kills wife, claims husband?