"Mother? She's *harmless!*" (laughs, nervously) "As *harmless* as one of those *stuffed birds*!"

Rating: 10/10 (1 November 2019)

What's the real kicker here is up to the very, very end they still think it's the financial motive -- "I *know* it was that Norman who'd take that $40,000!" Marion Crane sister says in a scene so far along, you almost are surprised to hear her express it.
They really don't know ...
(Hence, the last scene which Romero has expressed displeasure with -- "Not my idea of a good time!" -- where the psychiatrist "explains all." Well, jokes about the shower scene and this that and the other, Hitchcock let's you have *no idea* until the scene before last that this isn't a *crime* movie.)
Impossibly great, and one that improves the more you're attentive to the way people behave at work, without presuming too much when crossing the street, not trying to arbitrarily pry into the people your questioning's lives, etc. The level of professionalism expressed on the part of the characters is extraordinary -- Hitchcock & co. really didn't do a sloppy job, you might as well be watching another movie, with folks more alive and professional than you'd likely encounter daily, barring being up certain levels yourself.
Thanks to Robert Bloch!