Lumet began working in the entertainment industry as an Actress. She appeared in small roles in two films directed by her father, Deathtrap and Running on Empty, before playing the role of Nancy Bosch in his 1990 film Q&A. Lumet wrote the screenplay for the 2008 Jonathan Demme film, Rachel Getting Married. In 2016, Lumet had a CBS drama with a pilot commitment. Lumet was a drama Teacher at the Manhattan Country School in New York City.