illinois town. a thicket of vines and rumbles. acres of thorns that tear at the flush. four years, people just sped by without a second look. but something terrible happened there one cold night in the winter of 2014. that brought a stranger to town. a mother, looking for answers about her son. >> i knew one thing, i wasn't going to stop. >> no matter how painful the truth turned out to be. does it hurt you to be back here? >> yes. >> her heartbreak launched another mother's fight. >> i wanted to save my son. i'm a fighter. i'm a mom. >> and divided an entire community. >> no matter who you are, no matter where you came from, right is right and wrong is wrong. ♪ ♪ ♪ >> few people know this part of southern illinois better than