Any serious Harry Potter fan will probably have watched all eight of the films more times than they can remember.
The problem that comes with being a die-hard Harry Potter enthusiast is that, because your brain is simply brimming with all this trivia about the wizarding world, it can be hard to just overlook huge holes you might find in the plot.
Between the eight-movie strong film franchise and the seven books that J.K Rowling penned, there's a lot to take in - as well as a few massive differences between the two.
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And after watching Harry Potter and the Deathly Hallows: Part 2 for the umpteenth time, viewers have picked up on a certain part of the storyline which doesn't exactly make sense.
It's quite a biggie too, but thankfully, it's all sorted and solved by a scene which ended up on the cutting room floor - which has left fans begging the question of why it was ever deleted from the final cut in the first place.
Take a look at this:
The plot hole in question takes place during the climactic finale of the eighth Harry Potter movie, when Voldemort has demanded that the students of Hogwarts turn over the Boy Who Lived in exchange for their own lives being spared.
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Professor McGonagall (Maggie Smith) decided to send all of the Slytherin students off to the dungeons so they can't turn traitor and hand over Harry to the Death Eaters.
In the books written by Rowling, the Slytherin students and all of the witches and wizards at Hogwarts younger than 16 are sent out of the castle before s**t is really about to hit the fan.
But in the film, the young witches and wizards are sent down to the dungeons while the rest of the school cheers after a Slytherin student suggests handing Harry over to the Dark Lord.
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Among these lot who have been sent for a timeout are Draco Malfoy's henchmen, Goyle (Josh Herdman) and Blaise (Louis Cordice) - but somehow, they later turn up playing sidekicks to the blonde bully in the Room of Requirement.
As you may recall, Malfoy (Tom Felton) and his goons end up scrapping it out with Harry (Daniel Radcliffe), Ron (Rupert Grint) and Hermione (Emma Watson) and it all ends in a fireball.
But how on Earth were Goyle and Blaise able to be in two places at once, eh?
Well this deleted scene explains the whole thing very nicely - it's just a shame that Warner Bros decided not to leave it in.
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Although we didn't see this unfold in cinemas, Malfoy managed to break the Slytherin students out of the dungeons on his return to Hogwarts, and he intentionally grabbed his two pals to help him go and hunt Harry down.
But alas, the trio failed miserably at this anyway.
If they'd kept this deleted scene in it would have explained things a bit better, and more importantly it would have given us a few seconds more of Tom Felton in the movies, as throughout eight films he was only on screen for 31 minutes.
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This scene was actually supposed to turn out a lot differently originally, too.
Malfoy was meant to have been flanked by his long-time cronies Crabbe (Jamie Waylett) and Goyle, but Waylett was caught growing cannabis at his home and lost his place in the wizarding world in 2009.
He was sentenced to community service, before being slapped with a two-year jail term in 2012 after being found guilty of violent disorder for his involvement in the London riots.
These days, Waylett is flogging fan videos on Cameo for £164 a pop. Life comes at you fast, I guess.
But anyway, due to the fact that he was dropped from the Harry Potter films, Blaise Zabini stepped into the role of Malfoy's henchman.
Topics: Harry Potter, TV and Film, Daniel Radcliffe, Warner Bros