Monster is a 2003 American biographical crime drama film directed by Patty Jenkins. It follows the story of Aileen Wuornos, a street prostitute who murdered seven of her male clients between 1989 and 1990. Charlize Theron stars as Wuornos, and Christina Ricci portrays her semi-fictionalized lover, Selby Wall. The film received positive reviews from critics and achieved box office success, grossing $64.2 million on a $1.5 million budget.