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
Magical objects in Harry Potter his grandmother, stating that he ignored it and that the result was horrible. Subsequently, Neville receives another Howler from his grandmother after Sirius Black uses his list of passwords to enter the Gryffindor Common Room in "Harry Potter and the Prisoner of Azkaban". Hermione receives one in "Harry Potter and the Goblet of Fire" after Rita Skeeter publishes an article about the (fictional) relationship between Hermione and Harry. (In the film version, this incident is not referred to.) Dumbledore sends Harry's aunt, Petunia Dursley, a Howler in "Harry Potter and the Order of the Phoenix" to remind her of the