Why Zodiac was never caught?
After re-watching the movie 7 years after I googled a bit about Zodiac killer, looked at wiki, etc. Of course I literally drowned in all this stuff.
But, you know, just like in the movie, the mass murderer itself is not particularly interesting, there are lot of others who was caught, they are all psycho, has things in common (child trauma, sex abuse, etc), so in the end it's rather old story.
Aside exploration dark corners of human soul, society producing those monsters (common motive for all Fyncher's movies) I found it's extraordinary interesting how this killer, Zodiac, wasn't caught after all?
Because of... what, really? Bad investigation? Someone did mistake in procedure (like with Chikatilo when messed matching blood and sperm)? Perhaps authorities wasn't interesting or hiding something? Or someone inside police was tied with this killings and cover up things?
I dare to say no matter how smart you are, but killing people without a reason is rather dumb, and eventually most of this bad guys are going for execution - this story should have a simple, logical explanation. If it's not - there is a mistake somewhere.
PS Perhaps someone could drop a link for detailed analytical summary if such exists - why Zodiac wasn't caught?