Gillian Leigh Anderson (born August 9, 1968) is an American-British film, television and theatre actress, activist and writer. Her credits include the roles of FBI Special Agent Dana Scully in the long-running and widely popular series The X-Files, ill-fated socialite Lily Bart in Terence Davies' film The House of Mirth (2000), and Lady Dedlock in the successful BBC production of Charles Dickens' Bleak House. Among other honours, Anderson has won a Primetime Emmy Award, a Golden Globe Award and two Screen Actors Guild Awards.