Cedric Diggory was killed by Lord Voldemort in the Goblet of Fire.
Nobody, there isn't an eighth Harry Potter book.
There is no Harry Potter book or movie of that title.
Professor Quirrel died in the first book, Harry Potter and the Philosopher's Stone.
There isn't a eighth book and Harry Potter is still alive.
Harry Potter and the Deathly Hallows is the seventh book, Harry Potter and the Half-Blood Prince is the sixth book. See related questions for a list of who dies in each.
No, Hedwig died in the final book, Harry Potter and the Deathly Hallows.
Ron's elder brother, Fred Weasley. He died in the final book Harry Potter and the Deathly Hallows.
You an discuss if Harry really died, or if he should have.
SPOILERIn the 7th Harry potter book Fred died.
Fred Weasley died in the seventh book, Harry Potter and the Deathly Hallows. This was the eighth movie, Harry Potter and the Deathly Hallows Part 2 although his death was never seen on screen.
The three people that died in Harry Potter and the Philosopher's Stone book are:James PotterLily (Evans) PotterQuirinus Quirrell
You can download it but you can buy it, it's a published book.