Tom Riddle's Diary

Tom Riddle's Diary, a cursed Horcrux containing the 16-year-old memory of Lord Voldemort, serves as the pivotal antagonist artifact in Harry Potter and the Chamber of Secrets, where it manipulates Ginny Weasley to reopen the Chamber and unleash the Basilisk. Destroyed by Harry Potter with a Basilisk fang, it marks the first Horcrux elimination, symbolizing Voldemort's fragmented soul and setting the stage for the series' Horcrux hunt. Across the series, its legacy evolves from a mysterious bewitched object to a key revelation about Voldemort's immortality, referenced in later books as Harry and Dumbledore uncover the Dark Lord's Horcruxes.