Harry Potter is lucky to reach the age of 13, having survived numerous attacks from the Dark Lord, Voldermort. He hopes for a quiet year at Hogwarts, concentrating on Quidditch. However, a mass muderer has escaped from Azkaban, and soul-sucking Dementors who guard the prison are on the loose in hot pursue. It is assumed that Hogwarts is the safest place fpr Harry to be, but why does he feel watched in the dark all the time. Should he also take Professor Trelawney's terrible predictions seriously? Book 3 of the Harry Potter series continue to draw readers deeper into the world of the child wizard and his friends.