Harry Potter and the Prisoner of Azkaban: Harry touching Buckbeak the hippogriff for the first time.

Harry Potter and the Prisoner of Azkaban: Harry riding Buckbeak.

Harry Potter and the Prisoner of Azkaban: Alan Rickman as Professor Severus Snape.

Harry Potter and the Prisoner of Azkaban: The Marauder's Map.

Harry Potter and the Prisoner of Azkaban: Daniel Radcliffe as Harry Potter

Harry Potter and the Prisoner of Azkaban: Sirius Black as a dog.

Harry Potter and the Prisoner of Azkaban: David Thewlis as Professor Remus John Lupin.

Harry Potter and the Prisoner of Azkaban: Professor Lupin dreads the moonlight.

Harry Potter and the Prisoner of Azkaban: Lupin has become the werewolf.

Harry Potter and the Prisoner of Azkaban: The Lupin werewolf howling at the moon.

Harry Potter and the Prisoner of Azkaban: Lupin werewolf in the moonlight.

Harry Potter and the Prisoner of Azkaban: Sirius Black battling the Lupin werewolf in the moonlight.

Harry Potter and the Prisoner of Azkaban: The werewolf threatens Harry.

Harry Potter and the Prisoner of Azkaban: Ron Weasley in the hospital, recovering from dog bite.

Harry Potter and the Prisoner of Azkaban: Hermione and Harry using the Time Turner to fix things.