Mary McCormack

 Mary Catherine McCormack (born February 8 in 1969) is an American actress from the United States. She has had lead roles on the show as Justine Appleton on the series Murder One (1995-97), as Deputy National Security Advisor 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 an occupational therapy Norah McCormack, and William McCormack, an owner of a car dealership as well as an ice cream shop. Their sister Bridget was chief justice of the Michigan Supreme Court and a law professor at the University of Michigan Law School. Her brother William is an actor and writer, as well as producer who has appeared in an ongoing role as FBI agent Robert O'Connor on In Plain Sight.