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
Hermione Granger of Slytherin who has reopened the Chamber of Secrets. However, she is unable to join Harry and Ron in the investigation after the hair plucked from the robes of Slytherin student Millicent Bulstrode (with whom Hermione was previously matched up during Lockhart's ill-fated Duelling Club) was that of her cat, whose appearance she takes on in her human form; it takes several weeks for the effects to completely wear off. Hermione is Petrified by the basilisk after successfully identifying the creature through library research. Though she lies incapacitated in the hospital wing, the information she has found and left behind