UNS-155

Margaret "Maggie" Hallman, categorized as UNS-155 (Unsub-155) and also known as Materna, is a child sexual predator from Seattle, Washington. A former teacher, she was arrested for raping her student Tommy Brown, and was imprisoned for two years before receiving an early release due to overcrowding. Upon being released, she sought out the child she conceived with Tommy, committing seven murders in the process. Hallman was able to locate her son, Johnny, reunite with Tommy, and purchase a house where she and her family would live. However, her scheme was brought to a swift end when she was shot and severely injured by FBI agent Thomas Hotchner during a short standoff on her front porch. It is unknown whether or not Hallman survived the shooting, nor is it known the fate of her son and lover.