The opening of the chamber culminated in the death of another student, for which Rubeus Hagrid was framed, and expelled from school. The second plot started with former Hogwarts student Lord Voldemort, once known as Tom Riddle, locating anew the Chamber of Secrets and the monster within. Hagrid again was framed, and sent to Azkaban. The plot culminated in the Petrification of several students and Harry Potter and Ginny Weasley being almost killed. It all ended with Tom Riddle's memory (and a Horcrux) destroyed and the Basilisk killed.