Clea DuVall is an American film actress and director best known for her appearances in the films The Faculty (1998), But I`m a Cheerleader (1999), 21 Grams (2003), The Grudge (2004), Zodiac (2007), Conviction (2010), and Argo (2012). She made her directorial debut with the comedy-drama film The Intervention. In 2020, DuVall has written and directed Happiest Season, a romantic comedy film that stars Kristen Stewart, Alison Brie and Mackenzie Davis in pivotal roles.