Julia Margaret Duffy is an American film, stage, and television actress. She began her career in television, appearing in minor guest roles before being cast in the role of Penny Davis in the series The Doctors from 1973 until 1978. She starred in the acclaimed Broadway revival of Once in a Lifetime in 1978. However, she is best known for her role as Stephanie Vanderkellen in the hit TV series Newhart from 1983 to 1990. The role garnered her critical acclaim, including seven Primetime Emmy Award nominations, three Viewers for Quality Television awards, and a Golden Globe Award nomination for Best Supporting Actress – Series, Miniseries or Television Film.