Yeah, my late mother was into all that stuff. She wanted us to rent it back in the early 80's. I found it to be interesting to watch, especially the musical communication near the end.
She was into the occult, and paranormal, too. I was kinda, but lost my beliefs. I tend not to believe anything anymore unless I see it for myself. [8D][8D][8D][8D]
(I just hope I have a change of clothes handy if I ever did see it, lol )