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Katherine Lea Thompson (born May 31, 1961) is an American actress, producer, and director. She is best known for her roles as Lorraine Baines McFly in the Back to the Future trilogy (1985–1990), as Kelly Capwell in the television soap opera The Capwells (1985–1987), and as Dr. Kate McAllister in the CBS sitcom Caroline in the City (1995–1999).