Gillian Leigh Anderson 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 Milburn in the Netflix comedy drama Sex Education, and British Prime Minister Margaret Thatcher in the fourth season of Netflix drama series The Crown. Among other honors, she has won two Primetime Emmy Awards, two Golden Globe Awards, and four Screen Actors Guild Awards.

Dr. Dana Katherine Scully, MD, is a fictional character and one of the two protagonists in the Fox science-fiction, supernatural television series The X-Files, played by Gillian Anderson. Scully is a Federal Bureau of Investigation (FBI) Special Agent and a medical doctor (MD), partnered with fellow Special Agent Fox Mulder for seasons one to seven and seasons 10 and 11, and with John Doggett in the eighth and ninth seasons. In the television series, they work out of a cramped basement office at FBI headquarters in Washington, DC to investigate unsolved cases labeled "X-Files." In 2002, Scully left government employment, and in 2008, she began working as a surgeon in Our Lady of Sorrows, a private Catholic hospital – where she stayed for seven years, until rejoining the FBI. In contrast to Mulder's credulous "believer" character, Scully is the skeptic for the first seven seasons, choosing to base her beliefs on what science can prove. She later on becomes a "believer" after Mulder's abduction at the end of season seven.