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).

Known For

1408

as Lilly Enslin

Deep Impact

as Andrea Baker

K-PAX

as Rachel Powell

Miracle on 34th Street

as Myrna Foy

ER

as Debbie

True Crime

as Michelle Ziegler

The Newsroom

as Molly Levy

Law & Order

as Rickie the Bartender

Scandal

as Lisa Elliot

The West Wing

as Kate Harper