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Mary McCormack

Mary McCormack

Where to watch Mary McCormack in United States. On screen since 1956. Licensed apps only — 24 titles we track below.

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).

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