Mary McCormack
Biography
Mary Catherine McCormack is an American actress. She has had leading roles as Justine Appleton on the series Murder One (1995–1997), as Deputy National Security Adviser Kate Harper on The West Wing (2004–2006), as Deputy U.S. Marshal Mary Shannon on In Plain Sight (2008–2012), and as Peggy on the comedy series The Kids Are Alright (2018–2019).
Acting (40 movies)
K-PAX
2001
1408
2007
High Heels and Low Lifes
2001
The Big Tease
1999
The Broken Hearts Club: A Romantic Comedy
2000
Deep Impact
1998
Private Parts
1997
Dickie Roberts: Former Child Star
2003
Gun Shy
2000
Full Frontal
2002
Mystery, Alaska
1999
Right at Your Door
2006
Other Voices
2000
Colin Fitz
1997
For Your Consideration
2006
54
1998
Fathers' Day
1997
Harvest
1999
The Alarmist
1998
Should've Been Romeo
2012
Backfire!
1995
Escape from Polygamy
2013
True Crime
1999
A Country Called Home
2016
BigLove
2001
The Crash
2017
An American Girl Story: Maryellen 1955 - Extraordinary Christmas
2016
Madison
2005
Scooby-Doo! WrestleMania Mystery
2014
Vicious
2025
Drone
2017
Alien Code
2017
Treehouse
2019
Getting to Know You
1999
National Memorial Day Concert
2023
Still Laugh-In: The Stars Celebrate
2019
World Traveler
2002
Miracle on 34th Street
1994
Unpregnant
2020
Murder One: Diary of a Serial Killer
1997
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