Deadly Magnolia: Patricia Allanson American Justice : Season 9 Episode 12

American Justice examines the case of Patricia Allanson. In 1974 Allanson goaded her husband into killing his parents. Then after he was sentenced to prison she set her sights on his grandparents by poisoning them, all in an effort to gain a half million dollar inheritance. After serving a short prison term she returned to her evil scheming ways by stealing and poisoning an elderly couple that she was caring for, but this time she enlisted the help of her daughter.