Alfred Hitchcock's 'Vertigo'

I watched Hitchcock's 1958 classic for the umpteenth time again last night - and was not surprised to see something new about it. The film now seems to me a story of two men. The first man models one woman after another, then kills the first. The second man does the same. Symmetrical. Part I - Part II. With the explanation in between. Simples. Alternatively, you can see it as two men in love with the same woman. Madeleine is Gavin Elster's accomplice until he kills his wife and leaves for Europe: then she becomes the focus of Scottie's obssession until he overcomes his fear of heights and kills her.