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 Philosopher's Stone During the book, Harry makes two close friends, Ronald Weasley and Hermione Granger. Ron is described by Rowling as the ultimate best friend, "always there when you need him". Rowling has described Hermione as a "very logical, upright and good" character with "a lot of insecurity and a great fear of failure beneath her swottiness". Rowling also imagined a supporting cast of adults. The headmaster of Hogwarts is the powerful, but kind wizard Albus Dumbledore, who becomes Harry's confidant. Rowling described him as "epitome of goodness". His right hand is severe Minerva McGonagall, who according to the author "under that