I know we're not into Harry Potter now, but the past is the past and I can't forget how annoyed I was when the movie based on the third book, Prisoner of Azkaban, came out. I was a very disappointed teenager.

It was a whirlwind story to me at the time. I remember exactly where I was when I read it, as the moment that revealed the friendship between Harry's father James, Professor Lupin, Peter Pettigrew, and the alleged-murderer, Sirius Black, became seared into my brain. It was such a pivotal part of the overall story to me, that that twist alone made it my favorite in the series. So when the movie came out, I expected the use and development of The Marauder's Map to be a key highlight. It was a huge deal in the books, after all.

Yet in the movie, the map is just a neat thing Harry gets to use. Nobody mentions that Harry's own father helped create it. The movie never even tells who the Marauders are, even though the reveal of their backstory was the key emotional crux of the Shrieking Shack scene. To omit their story entirely felt like a gut-punch.

I didn't understand at the time why the director (Alfonso Cuaron) decided to straight-up change everything that made that story so compelling to me and my friends. To this day, I still don't understand.