In the 1600s, a brutal massacre on an island off the coast of New England leaves only one survivor: Sarah. Wounded and alone in the carnage, she fights to stay alive as she waits for her rescuers. Each night, she returns to a group of boulders along a path to the beach and listens to scavengers feed. That path is where she finally dies, but her spirit lingers on.

For more than three centuries, Sarah's ghost waits in the rocks for someone to save her. Most walk her path safely, but if they harbor dark emotions--anger, regret, hopelessness, or grief--she awakens. Sarah's spirit does...