James Stewart great as the overgrown boy, an ex detective but somehow full of innocence
Kim Novak is fantastic, playing not just Madeleine and Judy Barton as remarkably different people, but also pretending to be Madeleine pretending to be possessed by Carlotta Valdes.
Wonderful photography, with focus pulls and Scottie's loss of sanity shown in a striking and much copied sequence with Jimmy's face imposed over swirling spirals of colour as a small quiff of hair ruffles in a breeze.
Bernard Herrmann's soundtrack is brilliant, instinctively romantic and tragic as the scenes require, circular and repetitive echoing the themes of the film.
Poor Midge (Barbara Bel Geddes) is entirely sympathetic in her unrequited love, desiring Scottie whilst mothering him when his experiences start to break him apart.
Vertigo has a lot going on and his a nice counterpoint to many of Hitchcock's other films as there isn't really an outside antagonist here.