A shower will not clean you from this film.
Psycho revolutionizes horror simply. It presents itself as a mere thriller, but turns into a kind of darkness unlike the science-fiction approach of the last decade; a time when terror was spectacular, monstrous, not so lethal, and more politically correct. Psycho breaks new grounds in regards to taboos, sexuality and deviance, and never resorts to filler despite being based on dialog.
The camera work is superb. Hitchcock throws himself challenges that he executes perfectly, as an illusionist would. His techniques are mysterious, purposely complicated, and seem to wink at the student, casual and professional filmmaker and hardcore film fans. This is based on a book, but many freedoms are taken into making the content accessible, yet implicitly twisted.
The movie often asks us to reconsider our moral values and our initial judgment. Alfred Hitchcock slowly establishes horror through rigorous suspense, build-up and by structuring dialog or blocking strategically and with perfect timing. If Psycho feels so familiar, it is probably because it exposes the ills of society, concentrating them on a few characters and questioning their innocence.