Mary McCormack
Acting
🎂 1969-02-08
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).
Cast credits(75)
Self
2005
Self - Guest
2009
Rickie the Bartender
1990
Mary Shannon
2001
Self
2009
Self
2016
Self
2003
1992
Debbie
1994
Self - Nominee
1956
Kate Harper
1999
Abigail Liukin
2016
Janet
2017
Lisa Elliot
2012
Anne Finley
2019
Self - Guest
1999
Molly Levy
2012
Mary Shannon
2008
Self - Panelist
2016
Denna Altshuler
2012
Self - Panelist
2016
Kathy DeSantis
2016
Willie Day
2021
Carole McKay
2004
Peggy Cleary
2018
Chloe Daniels
2018
Maggie Morris
2003
Casey
2017
Caroline Yoder
2013
Self
2018
2018
Justine Appleton
1995
Lilly Enslin
2007
Andrea Baker
1998
Rachel Powell
2001
Michelle Ziegler
1999
Myrna Foy
1994
New Year's Eve Wife (uncredited)
1998
Ms. Richards (voice)
2014
Alison Stern
1997
Ellen
2017
Grace Finney
2003
Gloria Nesstra
2000
Pilgrim Woman
2006
Herself
2016
Virginia Farrell (uncredited)
1997
Donna Biebe
1999
Rebecca
2017
Anne
2000
Lilith
2019
Debra Clarke
2020
Frances
2001
Linda
2002
Beth Eckhart
1995
Sarah Schwab
2017
Lexi
2006
2025
Leann
2013
Monique
1999
Bonnie McCormick
2005
Sally
1998
Amanda
2016
Sarah Jackson
1995
Self
2019
Ellen
2012
Margaret
2002
Agent Becka Anslinger
1999
Kay Larkin
2016
Moira
1997
Leila Lee
1999
Self
2023
Anna
2000
Hilary Pfeiffer-Dunne
2012
Daphne
2000
Phoebe
2001