Bonfire by Krysten Ritter

Abby is a successful environmental attorney in Chicago who takes a case that just happens to be in her old small hometown in Indiana. She left behind those horrible high school days and must now not only face them, her old classmates and ailing dad, but see if the town's number one employer and some say - town savior, could be poisoning the townspeople. While in high school there was something called "the game" played by the pretty and powerful against the weak and different. One of the game's leaders disappeared and in searching for what happened to Kaylee, Abby finds herself in the middle of what might be another game with higher stakes and greater danger. Old boyfriends, old fears and old insecurities add up to one great "Erin Brockovitch" mystery. You can go home again - but should you?