Harry and Sadie Potter and the Prisoner of Azkaban

Harry and Sadie both have survived Voldemort disguised as a teacher and a Basilisk in their time at Hogwarts School of Witchcraft and Wizardry!
Now the twins face their third year at Hogwarts and things start to get crazy!
When a mysterious prisoner breaks out of the famous wizards jail Azkaban, everyone one begins to panic.
Who is this mysterious prisoner? Seems to be the question of year for Harry and Sadie. All the teachers seem to be hiding something from them, and the Potters are going to find out what it is!

Find out what happens in The prisoner of Azkaban!