ScreenLog
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
In Plain Sight (2008)
as Mary Shannon
K-PAX (2001)
as Rachel Powell
True Crime (1999)
as Michelle Ziegler
Deep Impact (1998)
as Andrea Baker