Cassidy made her Broadway debut in Present Laughter with Frank Langella in 1996.
She portrayed Nancy Pelosi, Speaker of the House, in the play The Adult in the Room, a Broadway Factor NYC world premiere written by Bill McMahon and directed by Heather Arnson and Conor t Bagley, which premiered at the Victory Gardens Theater in Chicago.
She appeared off-Broadway in Bright Ideas at MCC; on Broadway in Our Country's Good and "Present Laughter"; regionally in Richard III" (Lady Anne) with Richard Thomas, Mark Lamos directing; and in The Misanthrope at Philadelphia Drama Guild, among other productions.
[1] Cassidy received a nomination for the 2007 Drama Desk Outstanding Actress in a Play for the Off-Broadway production of "The Field" at The Irish Rep.
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