Harry Potter and the Chamber of Secrets by J. K. Rowling

Harry Potter and the Chamber of Secrets is the second novel in the Harry Potter series written by J. K. Rowling. The plot follows Harry's second year at Hogwarts School of Witchcraft and Wizardry, during which a series of messages on the walls on the school's corridors warn that the "Chamber of Secrets" has been opened and that the "heir of Slytherin" will kill all pupils who do not come from all-magical families. These threats are followed by attacks which leave residents of the school "petrified" (that is, frozen). Throughout the year, Harry and his friends Ron Weasley and Hermione Granger investigate the attacks, and Harry is confronted by Tom Riddle, later known as Lord Voldemort, who is attempting to regain full power. Harry Potter and the Chamber of Secrets begins as Harry Potter spends a miserable summer with his only remaining family, the Dursleys. During a dinner party hosted by his uncle and aunt, Harry is visited by Dobby, a house-elf. Dobby warns Harry not to return to Hogwarts, the magical school for wizards that Harry attended the previous year, explaining that terrible things will happen there. Harry Potter politely disregards the warning, and Dobby wreaks havoc in the kitchen, infuriating the Dursleys. The Dursleys angrily imprison Harry in his room for a while. Harry is rescued by his friend Ron Weasley and his brothers Fred and George in a flying car, and spends the rest of the summer at the Weasley home.
Harry Potter and the Chamber of Secrets provides contrasting characters who try to conceal their true personalities ... (Summary by Wikipedia)