Harry Potter and the Prisoner of Azkaban
By J.K. RowlingHarry Potter and the Prisoner of Azkaban is the third entry in the Harry Potter series and is written by J.K. Rowling. In this book, Harry Potter once again experiences an unusual summer when things go wrong with his Aunt Marge and Potter finds himself running away from the Dursleys. While doing so, Harry sees a mysterious figure that he later finds out might be the Grim, a bad omen that appears in front of the unlucky before disaster strikes.