Martha Campbell Plimpton (born November 16, 1970) is an American stage, screen and film actress, singer and former model. Her feature film debut was in The River Rat (1984) before rising to prominence in the Richard Donner film The Goonies (1985). She has also appeared in The Mosquito Coast (1986), Running on Empty (1988), Parenthood (1989) and Small Town Murder Songs (2011).She is recognized on Broadway for her roles in The Coast of Utopia (2006–2007), Top Girls (2007–2008), Pal Joey (2008–2009) and Shining City (2006–2007). She has performed in theatre productions of The Playboy of the Western World, A Midsummer Night's Dream, The Glass Menagerie, The Sisters Rosensweig, and Uncle Vanya. She returns to Broadway in the fall of 2014 in a revival of A Delicate Balance co-starring Glenn Close and John Lithgow.