Martha Campbell Plimpton (born November 16, 1970) is an American stage, film, and television 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), Raising Hope (2010) and Small Town Murder Songs (2011).