Joanne sets the stage for Harry’s life by introducing us to three contrasting “families:” James and Lily Potter—who have been murdered, and their little son Harry—who survived; Vernon and Petunia Dursley and their little son Dudley, who are about to receive a very unpleasant surprise; and Albus Dumbledore and Minerva McGonagall, and their “little son” Rubeus Hagrid, through whose eyes we start to understand just how important the events of the previous day have been in the magical world.