The Harry Potter books, written by J.K. Rowling, have spawned a world-wide phenomon. People, young and old, enjoy reading of/sharing in the adventures of the wizard Harry Potter.
The hugely popular Harry Potter movies are based on the Harry Potter Book Series. Each book in the Harry Potter series has a corresponding movie except for the final book, "The Deathly Hallows," that is dramatized in two movies - The Deathly Hallows Part I and The Deathly Hallows Part II.