Here's a picture of my fiction bookshelf. Every book has its place, and no part of the sequence can be duplicated. The fifth novel from the left is missing as I'm half way through reading it.
What am I reading?
Don't worry too much about the knowledge tag. You don't need any external knowledge at all to work out the ordering of the books, and once you have that a little research will allow you to work out which book fills the gap.