Julia Garner is an American actress. She is known for her role as Ruth Langmore in the Netflix crime drama series Ozark (2017–present), for which she has won two Primetime Emmy Awards for Outstanding Supporting Actress in a Drama Series. Garner also had roles in the FX drama series The Americans (2015–18), the Netflix miniseries Maniac (2018), and the Bravo true crime series Dirty John (2018–19). Garner has appeared in the films Martha Marcy May Marlene (2011), The Perks of Being a Wallflower (2012), and Sin City: A Dame to Kill For (2014). She had leading roles in We Are What We Are (2013), Grandma (2015), and The Assistant (2019).