Harry Potter and the Prisoner of Azkaban

Dark wizard Sirius Black (Gary Oldman) has escaped from Azkaban  prison and some believe he plans to exact revenge on Harry Potter (Daniel Radcliffe) for causing the downfall of his master, Lord  Voldemort. A serial killer being on the loose is only one of the problems plaguing the bespectacled wizard’s third year at school—Dementors, the soul-sucking guards of Azkaban, have been assigned to Hogwarts to protect the students, but their mere presence sends Harry into crippling fainting spells. With the help of Ron (Rupert Grint), Hermione(Emma Watson), and their new Defense Against the Dark Arts professor, Remus Lupin (David Thewlis, The Big Lebowski, Naked), Harry struggles to thwart the Dementors, find Sirius Black, and uncover the mysteries of the night that left him an orphan.