Two wastrel Americans tool about Italy. The rich Ronet is merely nasty; the poverty-stricken Delon is a potential murderer. Though both men share the same girl (Marie Laforet), there is a subliminal theme of homosexual envy throughout. This is underlined when Delon tries on Ronet's clothes and decides he looks better in them--and that he'd be better off if he was Ronet. Originally released as Plein Soleil, Purple Noon was based on The Talented Mr. Ripley, a novel by Patricia Highsmith, the same writer responsible for Hitchcock's "doppelganger" classic Strangers on a Train.