Harry Potter and the Chamber of Secrets is the second novel in J. K. Rowling’s Harry Potter series. It was published in 1998, following the success of the first book, Harry Potter and the Philosopher’s Stone (known as Harry Potter and the Sorcerer’s Stone in the United States). The Chamber of Secrets follows Harry’s second year at Hogwarts School of Witchcraft and Wizardry, during which a series of mysterious attacks occur. Harry and his friends must uncover the truth behind the attacks and save Hogwarts from a terrible evil. It was adapted into a film in 2002.