When a San Francisco detective, suffering from acrophobia, is asked my one of his friends to follow and investigate his wife’s activities, he soon becomes obsessively in love with her. The basis of his friend’s accusations is that he believes that she is becoming somebody that she isn’t but as things unfold, detective Ferguson realizes that there is a more sinister plot at hand. Cited as being one of Hitchcock’s best films, I don’t believe it’s his best but certainly one of his greatest achievements in suspense and brilliance. It’s a very complex and thoughtful story the blends mystery with forbidden passion. Wonderful special effects seem to be a byproduct of this film. For me, it’s Jimmy Stewart’s performance that won me over, especially his chilling turn of character at the end.