You were in a second hand bookstore when you find a old book in the back. It has a bright red cover and no title. When you pull it out and open it, you find what looks like a demonic symbol on the first page. This symbol glows briefly, but nothing else happens. Finding that odd and outright strange, you leave the book there and head home, not noticing the book disappearing. When you get home, you start to feel very strange.....