
Mary McCormack
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).
26 TV shows
TV Shows

Likely Renewed82%
Law & Order
NBC

Likely Renewed85%
Watch What Happens Live with Andy Cohen
Bravo

Likely Renewed92%
The Pitt
Max

Ended0%
ER
NBC

Ended0%
Law & Order: Criminal Intent
NBC

Ended
The West Wing
NBC

Ended
Scandal
ABC

Ended
The Late Late Show with Craig Ferguson
CBS

Returning
Jimmy Kimmel Live!
ABC

Ended
The Newsroom
HBO

Ended
The Ellen DeGeneres Show
Syndication

Cancelled
Chelsea
Netflix

Ended
The Tonight Show with Jay Leno
NBC

Ended
In Plain Sight
USA Network

Cancelled
Murder One
ABC

Cancelled
House of Lies
Showtime

Ended
Angie Tribeca
TBS

Returning
Tony Awards
ABC

Returning
Match Game
ABC

Returning
25 Words or Less
Syndication

Ended
Will & Grace
NBC

Cancelled
To Tell the Truth
ABC

Cancelled
The L Word: Generation Q
Showtime

Ended
Late Night with Jimmy Fallon
NBC

Cancelled
For the People
ABC

Ended
Divorce
HBO
Other Credits
K Street, Traffic, The Wright Verdicts, The Late Late Show with Craig Kilborn, Welcome to the Family, Chelsea Does, Loaded, The Kids Are Alright, Heels