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 Order of the Phoenix (soundtrack) Harry Potter and the Order of the Phoenix (soundtrack) Harry Potter and the Order of the Phoenix is the soundtrack to the 2007 film of the same name, based on the book by J. K. Rowling. Nicholas Hooper composed the film's score, following John Williams, who scored the first three films, and Patrick Doyle, who did the fourth. Though new to the series, Hooper had worked with director David Yates before. The soundtrack was released 10 July 2007, the day before the film's release. Hooper incorporated into the new score "Hedwig's Theme", the series' theme originally written by John Williams