Request #258

I’ve been searching for this book for a while now. The narrator of the story is a male detective who travels to this small town to solve the cold case of a teenage girl who was mysteriously murdered in the woods. The detective interviews a variety of people in the town . He meets this one woman who was friends with the girl who died when they were teenagers. The woman has a fear of bridges. He also interviews this other woman who lives with her brother who is described as being mentally ill.

Later on in the story we discover that the woman was in a secret lesbian relationship with the girl who died, and they were spotted together in the woods or on a beach by the boy who was mentally ill. The boy went home that night after spotting the girls together and tells his sister who then orders the boy to murder the girl .