A reasonable supernatural and scary role=playing supplement for the GURPS game.
If you are interested in focusing particularly on this area of role playing with this system you may want this book, or if you are a a big fan of that sort of thing.
Otherwise, if you just have the occasional vampire or ghost or something appear you won't need it.
3 out of 5
The above link is the complete list of post from this blog, updated each week, if you want to browse like that rather than search.
This list is quite long, and has become longer than I ever thought so in the interests of loading speed it is now situated elsewhere.
Similarly I am working on a simple website to browse by author that combines Free SF Reader and Not Free SF Reader that is extremely bare bones now, and can be found at the second URL above.