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 Harry, Voldemort, and Hermione as playable characters. In 2017, Warner Bros. Interactive Entertainment opened its own Harry Potter themed game design studio, by the name of Portkey Games; before releasing in 2018, developed by Jam City. All seven "Harry Potter" books have been released in unabridged audiobook versions, with Stephen Fry reading the UK editions and Jim Dale voicing the series for the American editions. "Harry Potter and the Cursed Child: Parts I and II" is a play which serves as a sequel to the books, beginning nineteen years after the events of "Harry Potter and the Deathly Hallows".