The following events occurred in 1943:
- Tom Riddle opens the Chamber of Secrets. Several students get injured, Moaning Myrtle gets killed by the Basilisk. Hagrid is framed for the attacks by Riddle and is expelled.
- Summer: Tom Riddle murders his father, Tom Riddle Sr., and his grandparents, Thomas and Mary Riddle, for the abandoning of his late mother, Merope Gaunt. His uncle, Morfin Gaunt is framed for the attacks by Riddle and is sent to Azkaban.