Hazel “Lucky” Strike comes to Temperance Brennan with a tape recording of an unknown girl being held prisoner and terrorized. Strike is convinced the voice is that of 18-year-old Cora Teague, who went missing more than three years earlier. She is also certain that the teenager’s remains are gathering dust in Brennan’s lab. While local legends of eerie nocturnal phenomena and sinister satanic cults abound, it’s a zealous and secretive religious sect that has Brennan spooked and struggling to separate the saints from the sinners.