Lauren Cohan (born January 7, 1982) is a British-American actress best known for her role as Maggie Greene in the horror television series The Walking Dead (2011–2018). Her other notable TV roles include Bela Talbot in the fantasy-horror series Supernatural (2007–2008), Rose in the supernatural series The Vampire Diaries (2010–2012), Vivian McArthur Volkoff in the action comedy series Chuck (2011), and Francesca 'Frankie' Trowbridge in the spy drama Whiskey Cavalier (2019).