Harry Potter (Daniel Radcliffe) returns to Hogwarts for his third year to find that Sirius Black (Gary Oldman), an escaped convict, is out to find him. But his troubles don't end there, because the soul-sucking Dementors have surrounded Hogwarts.

Film Trivia

• Director Alfonso Cuaron asked the three young leads to write an essay about how they viewed their characters, before filming began. Emma Watson produced 16 pages while Rupert Grint made his excuses and didn't write anything.
• The special effects team spent six months creating the Dementors. Director Alfonso Cuaron didn't want to use CGI and experimented with slow-motion movement and underwater puppets. Ultimately, it was thought that CGI would be the easiest way.
• This film was offered to Guillermo del Toro but he decided to direct Hellboy instead.
• Aware of his fondness for music, Gary Oldman presented Daniel Radcliffe with a bass guitar as a gift when they first met.
• Ian McKellen turned down the role of Dumbledore, having appeared as Gandalf in The Lord Of The Rings trilogy. He said 'I had enough trouble living up to one legend. Two would be too much to hope for.

If you like Harry Potter and the Prisoner of Azkaban, try these:

• Harry Potter And The Chamber Of Secrets