This application is the electronic version of the book written by JK Rowling.
Summary: The Wizarding world is shocked to hear a mass Murderer has escaped from the prison they call Azkaban. Sirius Black is said to have murdered countless muggles (non magic folk) and parents are locking up their children. Harry Potter has started school and is going on his first trip to Hogs Mead when by shear luck he overhears the Miniter for Magic wisper his name.
Harry Follows him using his invisibility cloak and discovers why Mr Weasley warned him about Black personally before school had started. Sirius Black had been a friend of his Parents, was the one who sold them out to Voldemort and worst of all he was and still is to this day Harry's God Father.
Harry knows thats why Sirius has escaped, he knows he's coming for him and he can't wait because when he finds him, Harry will be ready. Full of death and Suspense, this book is defiantly the darkest yet and shows that Magic isn't just cool tricks and bright lights.