Cult Insanity delves deeper into the story of Irene Spencer, focusing on the terrifying acts of Evril LeBaron, her brother-in-law and a self-proclaimed prophet who determined that he had been called to set the house of God in order. The older brother of Irene's husband, Verlan, Evril LeBaron had a zeal for living and teaching that was at first admired but soon took on a sinister tone. Evril's ambitions quickly turned lethal when he uncovered a doctrine concerning blood atonement-the act of saving a sinner's sould by taking his or her life. Irene quickly was enveloped by fear. Survival for herself and her ever growing family turned into a dangerous journey across the harsh badlands of California's Baja desert.