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).
as Self
as Willie Day
as Debra Clarke
as Anne Finley
as Self
as Lilith
as Peggy Cleary
as Self
as Chloe Daniels
as Janet
as Ellen
as Casey
as Rebecca
as Sarah Schwab
as Kay Larkin
as Kathy DeSantis
as Self - Panelist
as Self - Panelist