On a similar Hitchcock theme, Vertigo has nothing to do with fear of heights.
And Hitchcock's "Rope" isn't actually about the Boy Scouts but it does have a psychopath as one of its central characters.
Whereas Hitchcock's Spellbound has nothing to do with Siouxie and the Banshees or for that matter psychopaths.
Hitch was always a bit of a trickster like that when thinking up his film titles.