On the night of her high school graduation, Kathryn Campbell sits around a bonfire with her four closest friends, including the beautiful but erratic Jennifer. "I'll be fine," Jennifer says, as she walks away from the dying embers and towards the darkness of the woods. She never comes back.

Ten years later, Kathryn has tried to build a life for herself, with a marriage and a career as a journalist, but she still feels the conspicuous void of Jennifer's disappearance. When her divorce sends her reeling back to the Maine town where she grew up, she finds herself plunged into a sea of memories. With nothing left to lose, she is determined to answer one simple question: What happened to Jennifer Pelletier?