To friends and neighbours Theresa Knorr was a devoted, loving mother struggling to bring up five children on her own. Yet she had secretly become so insanely jealous of her daughters' growing beauty that she arranged terrible deaths for two of them. The sole surviving daughter told police how Theresa ordered her sons to drug, torture, and then burn alive one daughter, before starving a second to death. At first police refused to believe this wickedness, but evidence continued to mount and after five years, Thersa was finally charged with being her children's executioner.