Deanna Dunagan (born May 25, 1940) is an American actress. While principally active as a stage actress, she has also worked in television and film. She is best known for her Tony Award-winning portrayal of Violet Weston in Tracy Letts' August: Osage County and for her portrayal of Nana in M. Night Shyamalan's 2015 film The Visit. She has also...