Gillian Leigh Anderson ( JIL-ee-ən; born August 9, 1968) is an American actress. Her credits include the roles of FBI Special Agent Dana Scully in the series The X-Files, ill-fated socialite Lily Bart in Terence Davies's film The House of Mirth (2000), DSU Stella Gibson in the BBC/RTÉ crime drama television series The Fall, sex therapist Jean...