Bonfire by Krysten Ritter:
"It has been ten years since Abby Williams left home and scrubbed away all visible evidence of her small town roots. Now working as an environmental lawyer in Chicago, she has a thriving career, a modern apartment, and her pick of meaningless one-night stands.
But when a new case takes her back home to Barrens, Indiana, the life Abby painstakingly created begins to crack. Tasked with investigating Optimal Plastics, the town's most high-profile company and economic heart, Abby begins to find strange connections to Barrens’ biggest scandal from more than a decade ago involving the popular Kaycee Mitchell and her closest friends—just before Kaycee disappeared for good.
Abby knows the key to solving any case lies in the weak spots, the unanswered questions. But as Abby tries to find out what really happened to Kaycee, she unearths an even more disturbing secret—a ritual called “The Game,” which will threaten the reputations, and lives, of the community and risk exposing a darkness that may consume her.
With tantalizing twists, slow-burning suspense, and a remote, rural town of just five claustrophobic miles, Bonfire is a dark exploration of the question: can you ever outrun your past?"