Mary McCormack
Acting
Born 1969-02-08 · Plainfield, New Jersey, USA
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).
Filmography
Vicious
Aug 6, 2025
National Memorial Day Concert
May 28, 2023
Unpregnant
Sep 10, 2020
Still Laugh-In: The Stars Celebrate
May 14, 2019
Treehouse
Mar 1, 2019
Drone
May 26, 2017
Alien Code
Apr 23, 2017
The Crash
Jan 13, 2017
An American Girl Story: Maryellen 1955 - Extraordinary Christmas
Nov 25, 2016
A Country Called Home
Feb 26, 2016
Scooby-Doo! WrestleMania Mystery
Mar 11, 2014
Escape from Polygamy
Aug 24, 2013
Should've Been Romeo
Apr 28, 2012
1408
Jun 22, 2007
For Your Consideration
Nov 17, 2006
Right at Your Door
Jan 23, 2006
Madison
Apr 22, 2005
Dickie Roberts: Former Child Star
Sep 4, 2003
Full Frontal
Aug 2, 2002
World Traveler
Apr 19, 2002
K-PAX
Oct 26, 2001
High Heels and Low Lifes
Jul 16, 2001
BigLove
Jan 19, 2001
Gun Shy
Feb 4, 2000
The Broken Hearts Club: A Romantic Comedy
Feb 1, 2000
Other Voices
Jan 22, 2000
The Big Tease
Nov 26, 1999
Mystery, Alaska
Oct 1, 1999
True Crime
Mar 19, 1999
Harvest
Mar 12, 1999