Kimberly Jan Dickens (born June 18, 1965) is an American actress. Her film debut was a supporting role in the 1995 comedy film Palookaville. Dickens had lead roles in the films Truth or Consequences, N.M. (1997), Zero Effect, and Mercury Rising (both 1998). She had several supporting roles in films, such as Hollow Man (2000), House of Sand and Fog (2003), The Blind Side (2009), Gone Girl (2014), and Miss Peregrine's Home for Peculiar Children (2016). On television, Dickens had regular roles in the drama series Deadwood (2004–06), Treme (2010–13), and House of Cards (2015–17). She currently stars as the main protagonist Madison Clark on the AMC horror drama series Fear the Walking Dead (2015–present).