On the fifteenth of July, 2011, the highest grossing film franchise ever will finally come to an end. Spanning ten years, eight movies, four directors and a worldwide box-office gross of over six billion dollars – the Harry Potter film franchise will open at the close with Harry Potter and the Deathly Hallows: Part 2, as Harry faces off against He Who Must Not Be Named for the very last time.

Billed as The Motion Picture Event of a Generation, we at HeyUGuys wouldn’t want anybody to miss out. As such, here’s our recap of third book in the franchise, Harry Potter and the Prisoner of Azkaban. So, without further ado, previously on Harry Potter…

I solemnly swear that I am up to no good!

Having stopped Lord Voldermort twice now, Harry (Daniel Radcliffe) has attracted the attention of a new threat – a black dog which seems to be stalking him around Little Whinging. Returning to Hogwarts, Harry learns that Sirius Black (Gary Oldman) – the man believed to be responsible for betraying his parents to Voldermort all those years ago – has escaped Azkaban, spurring the Ministry of Magic to detach a number of Dementors to protect the wizarding school. Unusually susceptible to the creatures’ influence, Harry receives lessons from new Defence Against the Dark Arts teacher Remus Lupin (David Thewlis) in how to protect himself – using an apparently effective combination of charms and chocolate.

Seeking revenge on Black with Ron and Hermione once again in tow, Harry’s perception of the truth is drawn into doubt by the revelation that it wasn’t Sirius, but Peter Pettigrew (Timothy Spall) – who has been hiding out as Ron’s rat, Skabbers – who gave Lily and James Potter’s names to He Who Must Not Be Named. When Sirius is captured and sentenced to suffer the Dementor’s kiss, a fate worse than death, Harry uses one of Hermione’s time-turners to relive the day and save his godfather from his horrid fate.

Now in the hands of Alfonso Cuarón, the Harry Potter franchise was finally able to establish an identity of its own, other than as a mere extension of J. K. Rowling’s literary phenomenon. Taking the executor’s axe to a series of expendable subplots – much of Black’s backstory is cut along with the exact nature of the Marauders – Prisoner of Azkaban is much more streamlined than Columbus’ films, boasting a slimmer running time despite the increased size of the third book.

The simplification of the film’s plot allowed Cuarón – hired due to his outstanding work on Y Tu Mama Tambien – to show a renewed focus on character. As such we get our first real suggestion of the burgeoning attraction between Ron and Hermione, as well as a glimpse at Harry’s darker side – epitomized here by his desire for revenge. Often considered the best book in the series, Azkaban is also viewed by some as being the best film, with a series of exquisite action set pieces, an astute handling of the last act’s horror beats and a brilliantly ambiguous performance from Gary Oldman marking this one out from its predecessors.

Considering that much of the film takes place over the same day – repeated due to the time-travelling subplot – the film builds up a truly impressive momentum as it nears its Dementor-trouncing conclusion. Unavoidably darker than the films directed under Chris Columbus – the werewolf transformation scene is delightfully Hammer Horror – the film drags our heroes into their teenage years with a greater focus on Harry, Ron and Hermione’s lives outside of school hours. A darker Hogwarts called for a darker headmaster, and with the tragic death of Richard Harris prior to the release of Chamber of Secrets, Michael Gambon inherited the half-moon spectacles in a rather inspired piece of casting that would stand the franchise in good stead for the more turbulent instalments to come.

That said, Prisoner of Azkaban belongs to Messrs. Moony, Wormtail, Padfoot, and – well – not Prongs obviously, but the first three certainly. Oldman, Thewlis and Spall play beautifully off one another, their antagonism (not least with Alan Rickman’s Snape) leading to some of the most memorable and compelling scenes from the franchise to date. Holed up in the Shrieking Shack with an injured Ron, a terrified Hermione and an interrogative Harry, the surviving Marauders play off the younger cast-members to truly impressive effect. When the movie is so clearly capable of such hefty and dramatic notes, however, I can’t help but wish Cuarón hadn’t deemed it necessary to have Harry repetitively faceplant whilst on the Nightbus. Twice. What a total buzzkill.

Lumos: Alfonso Cuarón – who created a role for Lenny Henry with the Knight Bus’ shrunken head – proved a little too creative for J. K. Rowling, who had to veto an idea of his to populate Hogwarts with miniature people.

Homenum Revelio: Penelope Clearwater once again finds herself omitted from the finished film, her relationship with Percy Weasley still limited to a brief name-checking in the previous movie.

Check up with the other films so far in the Harry Potter Retrospective here.

Harry Potter and the Deathly HallowsTM – Part 2 is in cinemas now

Harry Potter Years 1-7: Part 1 Box Set is available on Blu-ray and DVD now