I seriously can't believe I spent 2 and a half hours watching this movie.
What upset me most is that it was a tribute to the legendary Alfred Hitchcock's Psycho. A 1960's movie portrayed a psychopath better than a 2020 movie. It took them 60 years to downgrade to this? Wow.
There is a big difference between a psychopath and a retarded/angry man.
There is absolutely no connection to what he did with the girls' bodies and to what happened in his childhood or whatever. What was that little skit he and his teacher played for her? I mean seriously? Does anything in the damn movie equate to anything else?
I really with directors and screenplay writers researched their topic thoroughly before making a movie on it.
This is not how psychopaths behave. It's upsetting that nobody brought that up. Please don't believe this to be the nature of a psychopath. If you've researched it enough, you too would be equally annoyed.