Orrin Porter Rockwell is more than just a deputy United States marshal and a deadly gunfighter. He's a member of the Mormon Danites, the group of enforcers known as the Avenging Angels, and he's the personal troubleshooter for Governor Brigham Young. And when Young sends Rockwell to the rough-and-tumble mining town of Tartarus, there'll be plenty of trouble for him to shoot. A group of Mormon miners has vanished, and before Rockwell uncovers the secret of their disappearance, he'll face deadly danger from all sides. What his adversaries don't know is just how dangerous the Avenging Angel is .