Mary McCormack

 Mary Catherine McCormack (born February 8th, 1969) is an American actress. She has had leading roles as Justine Appleton on the series Murder One (1995-97), as Deputy National Security Adviser Kate Harper on The West Wing (2004-06), as Deputy U.S. Marshal Mary Shannon on In Plain Sight (2008-12), and as Peggy on the comedy series The Kids Are Alright (2018-19).McCormack's film roles include Private Parts (1997), Deep Impact (1998), True Crime (1999), Mystery, Alaska (1999), K-PAX (2001), Dickie Roberts: Former Child Star (2003) and 1408 (2007).McCormack was born in Plainfield, New Jersey. The couple divorced in 1990. She is the daughter of an occupational therapist Norah McCormack, and William McCormack, an owner of a car dealership and an Ice Cream shop. Bridget, her sister, was chief justice of the Michigan Supreme Court. She is also an instructor at the University of Michigan Law School. William is her brother. William is an actor as well as a writer and producer who has appeared in a recurring role in the role of FBI agent Robert O'Connor on In Plain Sight.