Scottie Ferguson is a retired detective, his career ended by the onset of a paralyzing fear of heights. An old friend, the wealthy Gavin Elster (Tom Helmore), hires Ferguson to follow his wife (Kim Novak), whom, he explains, has grown obsessed with an ancestor of hers. The assignment draws Ferguson out of his comfortable role as observer and into a complex web of intrigue, mingled with the detective's own fantasies and fears. Stewart gives an exceptional performance as the disintegrating detective, while Novak, who was left largely undirected by Hitchcock, conveys a subtle and powerful psychological journey. Another star of the film is its San Francisco setting. 'Vertigo' is considered one of Hitchcock's finest and most complex films.