In ‘Harry Potter and the Chamber of Secrets’, there are no major characters who die. However, the character Moaning Myrtle is revealed to have died when she was a student at Hogwarts, which is central to the plot’s mystery surrounding the Chamber of Secrets.
Myrtle’s tragic backstory unfolds as we learn she was murdered by the Basilisk, a monstrous serpent that the heir of Slytherin unleashed upon the school. Her ghost haunts the girls’ bathroom where she died, providing Harry and his friends with crucial information regarding the Chamber’s mystery.
While the story features peril and suspense, particularly surrounding the lives of Harry and his friends, the deaths in this book tie back to the history and lore of Hogwarts rather than the plot’s current events.