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 were concerned with the violence contained in the novel and with morality issues occurring throughout the book. "The New York Times" writer John Leonard praised the novel, saying ""The Order of the Phoenix" starts slow, gathers speed and then skateboards, with somersaults, to its furious conclusion...As Harry gets older, Rowling gets better." However, he also criticises "the one-note Draco Malfoy" and the predictable Lord Voldemort. "Harry Potter and the Order of the Phoenix" is the fifth book in the "Harry Potter" series. The first book in the series, "Harry Potter and the Philosopher's Stone" was first published by Bloomsbury in