Any other film would have ruined it with some shitty resolution epilogue that ends the movie on a more "complete" note. Vertigo gives the audience no such comfort. Abrupt death, complete despair, end of the movie.
Norman Bates wouldn't hurt a fly. But he'll destroy your soul just by looking at you. Then the image of a skull is subliminally imposed on to his face, just to get under your skin even further.
Guess who my favourite director is?