Vertigo
Dark, shadowy atmosphere: A light airy appartment this may suggest happiness.
Creation of suspense using soundtrack music: There are violins in the background string instruments suggest suspense.
Morally ambiguous central character: The character does ask scotty to strangly go and follow his wife.
Murder encouraging a suspecting audience: The man falling from the roof.
Flashbacks: The shots keep going back to when he is on a roof suggests something significant had happened?
Hero in situation of threat or struggle: this shows a flashback and a suggested hero of the main male character of trying to save someone?
Twist and turns: The two characters we first see were engaged, this may surprise the audience.