Ghost Story with Fred Astaire? is that the film you are talking about? that is a good one..
The Woman In Black (need you ask?) An overwhelming sense of dread, pure spook. Everything works, everything's in place: the house, the mass neurosis in the village, the back story, the cemetery...& The Ghost.
I have not seen the Woman in Black, so I cant say it's the Greatest....The Innocents is another well played Ghost Story, starring Deborah Kerr..