obsession and voyeurism

His masterpiece 'Peeping Tom' is a landmark exploration of voyeurism and obsession, told from the perspective of a serial killer who films his murders.

De Palma repeatedly returns to themes of obsessive watching and voyeurism in films like 'Blow Out' and 'Body Double,' creating psychological thrillers centered on the male gaze.

'Rear Window' and 'Vertigo' are quintessential examinations of voyeurism and obsessive desire, exploring how observation becomes pathological possession.