Andy Griffith gives one of the best performances of his career as the socio-pathic John Wallace who is as evil as Griffith's other great character, Will Stockdale, is good. Johnny Cash makes a serviceable lawman. (Good casting: I'm afraid that if Mr. Griffith had played the lawman and Mr. Cash the villain, this would have been a poorer movie.) There are also great minor characters such as the witches. (Yes, witches--or conjurers as they might prefer.) I never thought of it before, but this movie probably echoes "Macbeth" even if it does not quite parallel it.