Harry Potter is fortunate to reach the age of thirteen, having survived the murderous attacks of the feared Dark Lord more than once. However, his hopes for a peaceful school year, where he can focus on Quidditch, are shattered when a mad mass murderer escapes from Azkaban, pursued by the soul-sucking Dementors that guard the prison. It is assumed that Hogwarts is the safest place for Harry. But is it his imagination that makes him believe he is being watched by eyes in the dark, and should he take Professor Trelawney's eerie predictions seriously?.