In the third year at Hogwarts, Harry Potter and Oliver Queen face a rough start when they discover that the deranged killer Sirius Black has escaped from Azkaban prison and is on a mission to kill Harry. Meanwhile, tension rises among the friends as Hermione's cat bothers Ron's sickly rat. To make matters worse, a group of menacing Dementors is sent to protect the school from Black. A mysterious new teacher helps Harry and Oliver learn to defend themselves, but what is his secret connection to Sirius Black?
10 parts