Miss Marple. I've yet to see Gracie Fields, Margaret Rutherford is plain ol' hysterical, and I'm personally not very fond of Helen Hayes as Miss Marple. Angela Lansbury also played the role but only once so I didn't put her up. I love Joan Hickson, Geraldine McEwan and Julia McKenzie equally, there all so wonderful.
Margaret Rutherford, was 2nd Miss Marple, made 4 movies starting in 1961 thru 1964. (Most consider her the first, but see Dame Gracie Fields). Ms. Rutherford was already in her 70's at the time of filming and her husband, Stringer Davis, costarred in all 4 movies as Mr. Stringer. Born in London May 1892 - May 1972 (80) (I really liked her even if she wasn't the author's visual likeness of Miss Marple)