Balsam began her career appearing in a recurring role on the ABC sitcom
Happy Days and later appeared in a number of shows, including
Dallas,
Taxi,
Hill Street Blues,
Family Ties,
The Larry Sanders Show, and
Magnum, P.I. Balsam also played leading roles in films
Crawlspace (1986) and
In the Mood (1987). She also appeared in a number of made-for-television movies, including
Kent State (1981),
Nadia (1984), and
Consenting Adult (1985). Balsam continued playing supporting film roles and guest starred on television through 1990s and 2000s, include
The Cake Eaters (2007),
L.A. Doctors (1998–99) and
Without a Trace (2003–04). From 2007 to 2014, Balsam had a recurring role as Mona Sterling in the AMC period drama series
Mad Men. In 2012, she also had a recurring role in the Showtime thriller
Homeland as Cynthia Walden. From 2016 to 2019, she starred opposite
Sarah Jessica Parker in the HBO comedy series,
Divorce. ==Personal life==