The author of the "Harry Potter" series is J.K. Rowling. The series, which began with "Harry Potter and the Philosopher's Stone" (released as "Harry Potter and the Sorcerer's Stone" in the U.S.), was published between 1997 and 2007 and consists of seven books. The story follows the life of young wizard Harry Potter as he attends Hogwarts School of Witchcraft and Wizardry and battles the dark wizard Lord Voldemort. Rowling's work has enjoyed monumental success, spawning a global fan base, numerous adaptations—including films and stage plays—and an extensive merchandise franchise. Her storytelling has significantly impacted children's literature and popular culture.