All the books, magazines, and newspapers that exist only within a fictional world, from the Necronomicon to the mysteries of Jessica Fletcher. They are more common in Speculative Fiction, but not restricted to it. They serve two main narrative purposes: verisimilitude and Exposition. Jessica is supposed to be an author; it would be bizarre if no trace of the books she writes existed. Reading the Necronomicon may frighten the protagonist half to death, but it also gives the reader an idea of the Backstory. Common types of fictional document include: Occasionally prone to Defictionalization.