* Nonfiction is about facts and reality. Ghost books, whether they claim to be true accounts of paranormal experiences or fictional stories about ghosts, fall outside of the realm of verifiable facts.
* Ghost books are considered fiction or paranormal. They usually involve supernatural elements and stories that are not based on scientific evidence.
* There are exceptions: Some books about ghosts might be found in the nonfiction section if they focus on the history of ghost lore, the psychology of belief in the paranormal, or the methods used to investigate ghost sightings (like parapsychology). These books would focus on real-world topics, even if they involve ghosts as a subject.
So, the short answer is: Ghost books are typically found in the fiction or paranormal sections of bookstores and libraries, not in the nonfiction section.