Mary Catherine McCormack (born February 8, 1969) is an American actress. She has had leading roles as Justine Appleton in the series Murder One(1995–97), as Deputy National Security Adviser Kate Harper in The West Wing (2004–06) and as Mary Shannon in In Plain Sight (2008–12).
McCormack was born in Plainfield, New Jersey. She is the daughter of clinical therapist Norah and car dealership and ice cream parlor owner William McCormack. Her parents divorced in 1990. She has a sister Bridget, a former professor of law at the University of Michigan Law School and justice of the Michigan Supreme Court, and a brother William, an actor who has appeared in a recurring role as FBI agent Robert O'Connor on In Plain Sight.
In 1983, McCormack graduated from the Wardlaw-Hartridge School in Edison, New Jersey. In 1991, she received her BA in comparative arts, specifically painting and creative writing, from Trinity College in Hartford, Connecticut.
McCormack began her acting career at age 12, performing in Gian Carlo Menotti's Christmas opera, Amahl and the Night Visitors. She continued her stage work in musicals and finished an acting program at the William Esper Studio. She has worked in New York theater productions, including The Atlantic Theater Company, Alice's 4th Floor, and Naked Angels, where she appeared in Jon Robin Baitz's A Fair Country.
McCormack portrayed Justine Appleton on Murder One (1995–1997) and also starred in the HBO series K Street, which aired for only ten episodes. She starred in Howard Stern's moviePrivate Parts in 1997. In 2004, McCormack joined the cast of The West Wing as Deputy National Security Advisor and ex-CIA officer Kate Harper. Her character soon became a recurring role and remained throughout the last three seasons until the series finale.
McCormack starred in USA Network series In Plain Sight. She portrayed Mary Shannon, a deputy United States marshal attached to the Albuquerque, New Mexico, office of the Federal Witness Security Program (WITSEC), more commonly known as the Federal Witness Protection Program. On July 28, 2010, the show was renewed for its fourth and fifth seasons, to run in 2011 and 2012. The show was cancelled in 2011, making the fifth season its last. After its end, McCormack was cast as the lead in Kari Lizer's untitled comedy pilot on ABC.
McCormack was nominated for the 2008 Tony Award for Best Performance by a Featured Actress in a Play for the role of Gretchen in the 2008 Broadway revival of Boeing Boeing.
In 2012, McCormack re-united with the cast of West Wing to film a video that served both as a reminder that US voters should vote for non-partisan candidates when they cast their ballots and as a video promoting McCormack's sister's ultimately successful judicial candidacy for the Michigan State Supreme Court.
|1994||Miracle on 34th Street||Myrna Foy|
|1995||Backfire!||Sarah Jackson|
|1997||Colin Fitz Lives!||Moira|
|1997||Private Parts||Alison Stern|
|1997||Fathers' Day||Virginia Farrell (uncredited)|
|1998||Deep Impact||Andrea Baker|
|1998||Harvest||Agent Becka Anslinger|
|1999||Getting to Know You||Leila Lee|
|1999||True Crime||Michelle Ziegler|
|1999||Mystery, Alaska||Donna Biebe|
|1999||The Big Tease||Monique|
|2000||Other Voices||Anna|
|2000||The Broken Hearts Club: A Romantic Comedy||Anne|
|2000||Gun Shy||Gloria Minetti Nesstra|
|2000||East of A||Daphne|
|2001||High Heels and Low Lifes||Frances|
|2003||Dickie Roberts: Former Child Star||Grace Finney|
|2006||Right at Your Door||Lexi|
|2006||For Your Consideration||Pilgrim Woman|
|2009||Streetcar||Casting Director||Short film|
|2012||Should've Been Romeo||Ellen|
|2013||Escape from Polygamy|
|1994||Law & Order||Rickie||Episode: "Doubles"|
|1995||The Wright Verdicts||Beth Eckhart||Episode: "Family Matters"|
|1995–1997||Murder One||Justine Appleton||41 episodes|
|1997||Murder One: Diary of a Serial Killer||Justine Appleton||TV miniseries|
|2001||More, Patience||Patience More||TV movie|
|2002||Julie Lydecker||Julie Lydecker||TV movie|
|2003||K Street||Maggie Morris||10 episodes|
|2003||ER||Debbie||Episode: "The Lost"
|2004||Traffic||Carole McKay||TV miniseries|
|2004–2006||The West Wing||Kate Harper||48 episodes|
|2008||Law & Order: Criminal Intent||Mary Shannon||Episode: "Contract"|
|2008–2012||In Plain Sight||Mary Shannon||61 episodes, lead role|
|2013||Welcome to the Family||Caroline Yoder||5 episodes|
|2010||In Plain Sight||Episode: "Father Goes West"|