[Tainan]

Seen it a few times. Never really cared for it.
There were quite a few movies of this genre released in the late '60s through the mid-70s.
Only one that really freaked me out was 'The Exorcist.'
That one was disturbing. Just happened that at the time I was doing undergrad work and reading some books by, and about, a guy named Anton Szandor LaVey.
That did not help at all.
Later met the guy at his shop in San Francisco. Creepy and...well, as weird as one might expect.
But not "frightening" as I expected he might be.

[yefragetuwrabrumuy]

If it’s any consolation, LaVey, usually when drunk, would let it slip that he was a just in it for the money “and benefits”, as it were, from the endless parade of naive suckers who went out of their way to hang out with him.

Not being a fool himself, as well as a former carny (carnival worker), he was always careful to carry a gun. Much of his philosophy was borrowed from disparate and often conflicting sources, generally secular, but he was also skilled in psychic fakery, like fortune telling. By all accounts he was well read and a good orator.

Perhaps his best talent was in not overdoing things that could get him in trouble. I don’t think he was ever arrested for anything, did not play politics, so that even when politicians expressed interest in Satanism, he kept it at the cocktail party level.