Mercedes McCambridge

Carlotta Mercedes McCambridge (March 16, 1916 – March 2, 2004) was an American actress. Orson Welles called her "the world's greatest living radio actress". She won an Academy Award for Best Supporting Actress for All the King's Men (1949) and was nominated in the same category for Giant (1956). She also provided the voice of the demon Pazuzu in The Exorcist (1973).