you rolled into a town called moundville. 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 and -- >> trying to escape the crowds. >> escape the crowd or running from something. >> oh, yes, where you have gone, andy griffith, mayberry has apparently up and left us. the sheriff fights real crime nowadays. >> the crime you see here is the same crime you would see in any city, just a smaller version. >> neighbors tend to know more of each other's business than they might in tuscaloosa, for example. which can be a bit of a nuisance, as you're about to see, 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 it things started coming apart in the way things do when parents don't talk about it. kelsey mayfield saw that troubled look in her home's eyes, her mother teresa. >> i could