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 Deathly Hallows – Part 1 respectively, reprising roles as Harry's best friends Ron Weasley and Hermione Granger. It is the sequel to "Harry Potter and the Half-Blood Prince" and is followed by the concluding entry, "Harry Potter and the Deathly Hallows – Part 2". The story follows Harry Potter who has been tasked by Dumbledore with finding and destroying Lord Voldemort's secret to immortality – the Horcruxes. Filming began on and was completed on . "Part 1" was released in 2D cinemas and IMAX formats worldwide on 19 November 2010. In the film's worldwide opening weekend, "Part 1" grossed $330 million, the third-highest in the