The Ninth Gate Reviews
The story is fairly believable, although I have questions about just what happened to the twin bookbinders/dealers.
In some ways I like the ending and in others I think that there could have been a little more to see, but not enough to seriously detract from the movie. Hopefully it leaves the viewer thinking about the story a little. It got me interested in old books and manuscripts enough to do a little reading about occult and strange books from before the 1900's.
Polanski is good with the whole Satanic thing, he seems to know a lot about it. This round operates differently from Rosemary's Baby, more of a detective story whereas Rosemary is an exercise in terror, but the unfolding and understanding of Satanic cult is similar. Orgy, rituals, power seeking, and of course death.