Hermione Granger is crucial to Harry and Ron in their successful mission to solve the mystery of the Chamber of Secrets. Hermione is revived after Harry kills the basilisk, but she is distraught to learn that all end-of-year exams have been cancelled as a school treat. Hermione buys a cat named Crookshanks, who takes to chasing Ron's pet rat, Scabbers. Before the start of term, Professor McGonagall secretly gives Hermione a Time-Turner, a device which enables her to go back in time and handle her heavy class schedule, though this is not revealed until the penultimate chapter. Much tension comes into play
Harry Potter and the Chamber of Secrets the year, Harry and his friends Ron and Hermione investigate the attacks. The book was published in the United Kingdom on 2 July 1998 by Bloomsbury and later, in the United States on 2 June 1999 by Scholastic Inc. Although Rowling says she found it difficult to finish the book, it won high praise and awards from critics, young readers and the book industry, although some critics thought the story was perhaps too frightening for younger children. Much like with other novels in the series, "Harry Potter and the Chamber of Secrets" triggered religious debates; some religious authorities have condemned