On a November afternoon in 1992, 24-year-old Bobby Coulson murdered his parents, two sisters, and a brother-in-law. He bound and gagged his first victim, his mother, and set her on fire. When Bobby was arrested for the crimes, everyone believed he'd done it for his parents' $600,000 estate. But his actual motives were much deeper and darker. Now, featuring Bobby's mother's diary, interviews with family members and friends, here is the gripping story of a mother whose love wasn't enough to save her son or herself.