Margarette Laverne Mullins Mankin (July 16, 1927 – Nov 2, 1987) was found dead on Nov. 2, 1987. Mankin (60) was murdered inside her home in North Duncanville, Texas. She was found by her husband Avery Adair Mankin (then 65) in the doorway between the garage and the kitchen. Adair had just returned home from […]