[Regarding books from the horror, fantasy, and science fiction genres.]

I've had experience with some friends that read books like these. I wouldn't say that they were "possessed" however they acted much differently after reading these books. Some of the books that brought about this change did not even appear aesthetically evil until I noticed their effects. Ever since then I've avoided most books at all costs except of course the Bible. It seems to have been doing me some good because I have not been taken over by evil spirits yet.