From a young age, 28-year-old Embla Nystrom has been plagued by chronic nightmares and racing thoughts. Though she still develops unhealthy fixations and makes rash decisions from time to time, she has learned to channel most of her anxious energy into her position as Detective Inspector in the mobile unit in Gothenburg, Sweden, and into sports. A talented hunter and prize-winning Nordic welterweight, she is glad to be taking a vacation from her high-stress...

Ohio, 1926: For many years, the underground railroad track in Moonvale Tunnel has been used as a short cut through the Appalachian hills. When an elderly woman is killed walking along the tracks, the brakeman tells tales of seeing a ghostly female figure dressed all in white. Newly elected Sheriff Lily Ross is called on to the case to dispel the myths, but Lily does not believe that an old woman would wander out of the hills onto the tracks. In a...