Harry Potter Spoilers!!!

Ron and Hermione die at different times in the book, both of them are dead by the end + Snape is was forced to kill Dumbledore + Dumbledore knew Harry's parents were going to be killed + Harry kills himself in order to kill Voldemort + In the end of the book Harry is reunited in the Deathly Hallows (Ghost World) with his parents, Ron, Hermione, Sirius and Dumbledore. Very emotional. Source.