A cut storyline from Harry Potter and the Prisoner of Azkaban created two major problems. While the Harry Potter movies have been a huge success with both audiences and critics, the third installment, Harry Potter and the Prisoner of Azkaban has always been singled out as an exceptional adaptation of its source material and arguably the best feature installment of the franchise.
In the original book of Harry Potter and the Prisoner of Azkaban, Harry Potter receives the Marauder’s Map, which shows the location of every person on the entire grounds of Hogwarts. The map was created by the Marauders: Moony, Wormtail, Padfoot, and Prongs. It is later revealed in the book that the real identities of the Marauders were Remus Lupin, Peter Pettigrew, Sirius Black, and James Potter, and the nicknames were based on whichever animal they could transform into.
Related: Harry Potter: How The Marauder's Map Actually Works (Charm Explained)
There are hints in the Prisoner of Azkaban movie that those four friends are the Marauders; however, it is never outright stated in the adaptation, nor is it ever confirmed in any of the subsequent movies. While film adaptions often cut storylines for time, the Marauders’ identities and backstory being omitted caused two problems. By not confirming their identities, the movie doesn’t let the audience in on major character moments for the Marauders, even changing some of their backstories. It also makes key moments in other Harry Potter movies when the Marauders are mentioned confusing for viewers who haven’t read the books.
When the Marauders’ identities are revealed in the Prisoner of Azkaban book, it is accompanied by how they came up with the names and created the map. It is explained that when
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