Corso is hired by Balkan, a book collector, to authenticate his rare book "The Nine Gates of the Kingdom of Shadows". There are only 3 copies left, but as Balkan believes the book can summon the devil, and he cannot summon the devil with his, he thinks perhaps his copy is fake. Corso must compare his book with the other two and find which one is the original. In his quest, Corso finds that the words in the 3 books are the same, but of the 9 pictures/drawings, only 3 are original. To collect all 9 original pictures drawn by Lucifer, one must have all 3 books.
Who would think that being a book hunter can be dangerous, eh? Corso's friend is murdered and he himself is almost killed several times. It's only a book! I myself love reading, but for me the 1st or 50th edition is the same. I only need to read the words in the book and don't bother with the binding, paper, etc.
The Ninth Gate was marketed as a horror movie, so a friend of mine refused to watch this. I told him this was actually a thriller and that was no ghost in it. As much as he liked Johnny Depp, he still refused. Emmanuelle Seigner does look scary sometimes, but I always turn my face away every time she stares into the screen and tries to break the 4th wall. The scariest moment, in my opinion, is when the dead face of Baroness Kessler shown in a close-up. The original page of the 9th picture also makes me shivered. The burning castle picture is very shocking.