With seven films already released and one yet to come, the film series based on the wildly popular children's novels by J. K. Rowling has grossed over $6 billion to date worldwide. The blockbuster films tell the story of Harry Potter, a young orphan who learns that he's descended from a magical underground wizarding society, and must attend a magical school and learn to defeat the evil lord, He-Who-Must-Not-Be-Named, Voldemort.