Lockhart's False Confidence About Rubeus Hagrid's Guilt
Pages 269-270
During Defense Against the Dark Arts, Gilderoy Lockhart insists that Rubeus Hagrid's arrest means the danger is over, much to the irritation of Harry, Ron, and the other students. Harry and Ron decide to use the Invisibility Cloak to follow the spiders that night, determined to find answers in the Forbidden Forest.