Sarah Clarke (born February 16, 1972) is an American actress, best known for her role as Nina Myers on 24, and also for her roles as Renée Dwyer, Bella Swan's mother, in the 2008 film Twilight, Erin McGuire on the short-lived TV show Trust Me, and CIA Officer Lena Smith on the USA Network show Covert Affairs.

[1] Clarke attended John Burroughs School in St. Louis, Missouri (along with Mad Men star Jon Hamm, her prom date), and Indiana University Bloomington studying Fine Arts and Italian.

Clarke's career soon blossomed with minor roles, including films All About George in 2000 and The Accident in 2001, as well as television shows such as Ed and Sex and the City.

[2] She accepted a leading role on the TNT series Trust Me, opposite Eric McCormack and Thomas Cavanagh.

[3] Clarke met her husband, Xander Berkeley, while on the set of 24 (he played her supervisor, George Mason) and they were married in September 2002, a year after meeting.