Acting
Mary McCormack
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).
Known for
1408
Deep Impact
K-PAX
Miracle on 34th Street
The Pitt
ER
True Crime
The Newsroom
Law & Order
Scandal
The West Wing
54
Private Parts
Law & Order: Criminal Intent
Scooby-Doo! WrestleMania Mystery
Unpregnant
Movie credits · 42
Vicious
National Memorial Day Concert
Unpregnant
Still Laugh-In: The Stars Celebrate
Treehouse
Drone
Alien Code
The Crash
An American Girl Story: Maryellen 1955 - Extraordinary Christmas
A Country Called Home
Scooby-Doo! WrestleMania Mystery
Escape from Polygamy
Should've Been Romeo
The Unprofessional
1408
For Your Consideration
Right at Your Door
Madison
Dickie Roberts: Former Child Star
Full Frontal
World Traveler
K-PAX
High Heels and Low Lifes
BigLove
East of A
Gun Shy
The Broken Hearts Club: A Romantic Comedy
Other Voices
The Big Tease
Mystery, Alaska
True Crime
Harvest
Getting to Know You
The Alarmist
54
Deep Impact
Murder One: Diary of a Serial Killer
Fathers' Day
Private Parts
Colin Fitz
TV credits · 35
The Pitt
Heels
The L Word: Generation Q
The Kids Are Alright
25 Words or Less
For the People
Will & Grace
Loaded
Divorce
Match Game
To Tell the Truth
Chelsea
Chelsea Does
Angie Tribeca
Welcome to the Family
The Newsroom
Scandal
House of Lies
Watch What Happens Live with Andy Cohen
Late Night with Jimmy Fallon
In Plain Sight
The Late Late Show with Craig Ferguson
Traffic
K Street
The Ellen DeGeneres Show
Jimmy Kimmel Live!
Law & Order: Criminal Intent
The West Wing
The Late Late Show with Craig Kilborn
Murder One
The Wright Verdicts
ER
The Tonight Show with Jay Leno
Law & Order
Tony Awards
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