Harry Potter and the Half-Blood Prince

Continuity mistake: In the Great Hall, when Lavender's eyes are shooting daggers at Ron and Hermione, Harry's arms/hands keep changing position on the table as the three of them speak.

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Continuity mistake: At the Three Broomsticks, Slughorn is holding a mug with his left hand when he speaks to Harry, but when he says, "Good to see you, Wallenby," the mug is suddenly in Slughorn's right hand, with his left arm down by his side. (00:51:15)

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Continuity mistake: At Aragog's funeral, there is a long shot of Slughorn, Hagrid and Harry standing by Aragog. However from this angle Aragog is not here. Given the angle you should be able to see Aragog's body.

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Continuity mistake: In Potions class, when Slughorn removes the vial of Felix Felicis, he turns to face the class and holds the vial up for the class to see, but in the next shot facing him he holds only the very bottom point of the vial. (00:35:15)

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Continuity mistake: When the Death Eaters attack Ollivander's, the debris/fire and the bodies lying on the ground differ between the overhead and next close-up.

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Continuity mistake: At the Burrow, when Ron takes a seat between Ginny and Harry he is holding a pedestal plate full of pies, which change in the next shot facing the other way.

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Continuity mistake: Aboard the Hogwarts Express, when Draco petrifies Harry he falls immobilized. Just as Draco kicks him, Harry's head is positioned farther out in the aisle, than previous and following shots. (00:26:40)

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Continuity mistake: At the Muggle orphanage, in the corridor when Mrs. Cole says, "Tom, you have a visitor," Dumbledore's scarf hangs askew, but next shot facing him the scarf hangs properly. (00:40:05)

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Continuity mistake: The glass that is smashed in the Great Hall's window behind the staff tables changes somewhat from when Bellatrix smashes it, and when we are shown the Great Hall empty.

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Harry Potter and the Half-Blood Prince mistake picture

Continuity mistake: When Dumbledore and Harry are talking about Horcruxes, Harry's hair is nice and combed in one shot. The camera cuts to a side view and his hair is now messy.

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Continuity mistake: In the Great Hall, when Ron (wearing his Quidditch uniform) asks Hermione about the Slug Club, Ron's right arm lies on the table in front of him in shots from behind, but in shots facing him his right arm is down beside him.

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Continuity mistake: When Hermione opens the locket to read the note, the locket and chain's position changes in her hand between consecutive shots.

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Continuity mistake: At the end of the movie, there is a long shot of Hermione, Ron and Harry atop the Astronomy tower. In this long shot Hermione's hands are in different places compared to the previous close up.

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Continuity mistake: During the Slug Club's dessert, as Slughorn speaks to the students, their ice cream, syrup, thin wafers, spoons, etc, change depending on the camera angle.

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Continuity mistake: When they are at The Three Broomsticks pub Hermione orders 2 butter beers and a ginger wine, but they all drink butter beers.

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Suggested correction: Hermoine orders 3 butterbeers and asks for some ginger in hers. She does not order 2 butterbeers, nor does she ask for a separate ginger wine.

Other mistake: While Harry, Ron, and Hermione are walking back from the Three Broomsticks, Ron whispers to Harry about Hermione's earlier comment about snogging, and when we hear Ron say, "As if!" the subtitles read that Harry said it. (00:51:45)

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Other mistake: After Ginny sees Hedwig and Harry's trunk at the Burrow, everyone gathers at the staircase and talks to Ginny about Harry's whereabouts, and when Hermione exclaims "Really?" we hear Harry answer "Really!" but the subtitles read that Ron answers Hermione. (00:13:00)

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Hagrid: Seriously misunderstood creatures, spiders are. It's the eyes I reckon. They unnerve some folk.
Harry: Not to mention the pincers.

More quotes from Harry Potter and the Half-Blood Prince

Trivia: Christian Coulson, who played Tom Riddle in the second film, expressed interest in returning for this film, but David Yates felt Coulson was too old to convincingly play the role again. Ironically, Coulson was "too old" to begin with, being almost ten years older than the age group Chris Columbus had set for auditions.

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More trivia for Harry Potter and the Half-Blood Prince

Chosen answer: Snape wants to know how Harry knew Sectum Sempra. As shown by him using Occumelancy to see where his copy of Advanced Potion making is. But at the same time, if Snape punished Harry for a spell in a book, Harry could show it to Dumbledore, who would recognise Snape's handwriting. Additionally, Harry was certainly punished in the book - he got detention with Snape every Saturday for the rest of the term. The movie most likely had to cut this for time issues, and also perhaps because the scene is more dramatic if Snape only silently glares at him.

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