Katherine Marie Helmond (July 5, 1929 โ February 23, 2019) was an American actress. Over an acting career spanning six decades, she was best known for her starring role as Jessica Tate on the sitcom Soap (1977โ1981) and her co-starring role as Mona Robinson on Who's the Boss? (1984โ1992). Helmond also played Doris Sherman on Coach (1995โ1997)...
