The first book in the Harry Potter series is titled "Harry Potter and the Philosopher's Stone" in most regions outside the United States, where it is known as "Harry Potter and the Sorcerer's Stone." Written by J.K. Rowling, the novel was published in 1997 and introduces readers to the young wizard Harry Potter, who discovers his magical heritage on his eleventh birthday. The book sets the stage for Harry's adventures at Hogwarts School of Witchcraft and Wizardry, where he makes friends, learns about magic, and faces off against the dark wizard Voldemort. It has since become a global phenomenon.