A fictional series is a collection of related stories that share common characters, settings, or themes. These series can be found in various formats, including books, television shows, and movies. Each installment typically builds on the previous ones, allowing for character development and plot progression over time. Fictional series often explore complex narratives and can span multiple genres, such as fantasy, science fiction, or mystery. Popular examples include Harry Potter by J.K. Rowling and The Lord of the Rings by J.R.R. Tolkien. These series engage audiences by creating immersive worlds and compelling storylines that encourage readers or viewers to return for more.