When seventeen-year-old Abigail goes missing, her best friend Emma sets out to discover what happened. The police believe Abi ran away, but Emma doesn't believe her friend would leave without her, and when officers find disturbing evidence in the woods, the festering secrets and longstanding resentment of both Abigail's family and the people of Whistling Ridge, Colorado, begin to surface. But Abi had secrets, too, and the closer Emma grows to unraveling the past, the farther she feels from her friend. And in a tinder box of small-town rage, and all it will take is just one spark - the truth of what really happened that night - to change their community forever.