Corrected entry: When Harry is preparing a new Quidditch team, and after Ginny shouts for everyone to shut up, there is a man walking behind the goal posts in the background. Normally this could be just any other character, but the man is wearing regular trousers and a long shirt or jacket.
Corrected entry: At the top of the Astronomy tower when Dumbledore is talking to Harry about the Horcruxes, as Harry walks towards Dumbledore you can see two people, either crew or extras, walk behind the "wall" to the right of the shot.
Corrected entry: When Snape appears after Harry has used Sectum Sempra during his fight with Draco in the bathroom. Harry leaves the bathroom and there is an extra or a crew member standing against the wall.
Corrected entry: When Tom Riddle is talking to Professor Slughorn about horcruxes, Slughorn mentions that you have to kill to make a horcrux as it rips the soul apart. Tom Riddle says, "Can you only split the soul once, for instance seven?" This shows that Tom was planning to make seven horcruxes, however he only intentionally created six horcruxes and as Dumbledore said in 'Deathly Hallows Pt 2', "You were the horcrux Voldemort never intended to make, Harry". Surely Tom would have said six horcruxes then, not seven.Professor Lazarus
Corrected entry: Immediately after Katie is cursed by the necklace, Harry, Ron and Hermione are in Mcgonagall's office talking about what they saw in Hogsmeade. Harry says, "It was Malfoy." As both teachers turn Mcgonagall says,"That is a very serious accusation, Potter."As she says this, she looks oddly transparent. You can see the window pane design through her robes, particularly in the shoulder. This continues to be true until she says "I suggest you go back to your dormitories." This could possibly signify a green or blue screen behind them.
Corrected entry: When Harry gets the Advanced Potions Making book, "This Book is the Property of the Half-Blood Prince" is on the first page. A little later when Hermione and Ginny want Harry to turn the book in, Ginny grabs the book from Harry and looks at the last page and reads "This Book is the Property of the Half-Blood Prince".McClimber
Corrected entry: When Harry and Ron talk in the bedroom, Harry is watching Draco where he goes with the special map of Hogwarts, the name of Draco on the map is misspelled Malpoy.
Corrected entry: Harry and Dumbledore apparate from the tube (train station) at few minutes after 11 p.m. (as evidenced by the date that Harry made with the waitress for when her shift ends at 11). However, they apparate to the town where Prof. Slughorn is hiding and the grandfather clocks reads approximately 10:26 p.m.MovieFan612
Corrected entry: In the scene where Draco attacks Harry on the Hogwart's Express, it appears that they shot to scene at both ends of the train compartment and then spliced the different takes together. If you watch the numbers on the wall above the seats, they bounce back and forth from low to high numbers.
Corrected entry: After Draco is escorted out of Slughorn's party by Snape, and Harry begins to spy on them, you can see crew rugs used to quiet Draco and Snape's footsteps. The same rugs are visible earlier in the film when Harry and Ron walk down a corridor after Slughorn's class.
Corrected entry: When Dumbledore rises to give a speech, the gold owl on his pedestal shakes its head and then spreads its wings, which are perfectly clean. Later during the speech, the wings are shown covered in dried wax from the candles.
Corrected entry: When Harry drinks the Felix Felicis, he appears to drink/down the entire bottle, but the next shot shows that it is still half full. They may have shot both versions because in the book Harry only drinks half and saves the rest for later.
Corrected entry: When the students and teachers raise their wands in salute of Dumbledore, Hagrid is holding a wand like everyone else. He should be holding his pink umbrella, containing the pieces of his wand, which was snapped 54 years previously.
Corrected entry: When Harry and Dumbledore go into the house where Prof. Slughorn is staying in the beginning of the movie, dragon blood drips onto Harry's head. Dumbledore touches it, but there is blood still left on Harry's head. Once Slughorn is revealed he assesses Harry, but Harry's hair is different and the blood stain is no longer on his forehead.
Corrected entry: When Harry uses the instant darkness powder on the Hogwarts Express so that he can spy on Draco, it is daytime. When everyone clears off the train when they arrive it is night outside. Hermione says "Wheres Harry?". But there must have been at least an hour between when Harry left them and Hermione asks. Why is she only asking where he his now?AshleyWeasley
Corrected entry: Near the beginning of the film, where Harry is in the train station with Dumbledore, they are talking and Dumbledore lifts his left hand which is severely burnt. Nearer the end of the film when Harry and Dumbledore find out about the Horcrux's, Dumbledore brings out from his drawer a book from the second film and a ring belonging to Tom Riddle's mother. He explains that it was difficult to get the ring, and then holds up his burnt hand, but this time it's his right hand that is severely burnt, not his left.Katie..x
Corrected entry: When Ron, Hermione & Harry are sitting in the Great Hall discussing Ron's break-up with Lavendar, there is one row of tables behind Harry - one row behind Ron & Hermione - total, 3 rows of tables. When Harry leaves the Hall, there are 4 rows of tables as there should be.
Corrected entry: Professor McGonagall tells Harry that Slughorn will accept students who had Exceeds Expectations on their N.E.W.T. The exams that Harry took the previous year were called O.W.L., while NEWTs are the exams 7th year students take.
Corrected entry: [SPOILER WARNING] After Dumbledore finishes drinking the potion in the cave, it is Harry who takes the horcrux from the basin and puts it in his pocket. However, when Harry approaches Dumbledore's dead body, the very same locket had seemingly fallen out of Dumbledore's pocket and Harry takes it again. Actually, it should be in his pocket already.
Corrected entry: At the start of the movie Ginny has dark brown/black hair, then in the next shot shes gone back to ginger.
Corrected entry: In the scene where Draco Malfoy attacks Dumbledore, Bellatrix Lestrange walks in wearing dark lipstick. The camera switches to a side view of Draco, and Bellatrix kisses him on the back of the head, and she is wearing no lipstick. The Camera goes to Dumbledore, then back to Draco and Bellatrix, and her lipstick has reappeared.x0breeXcore0x
Corrected entry: At the end of Order of the Phoenix, Harry is going home with all his friends. However, at the start of Half-Blood Prince, they show the Daily Prophet at the Ministry taking pictures of Harry and Dumbledore.
Corrected entry: When the necklace is brought to McGonagall, Hermione is to the left, then Ron, then Harry. When Snape arrives and inspects the necklace, Hermione is now in the middle. When the shot shows them again, Hermione is again on the far left side.
Corrected entry: When Harry is giving Dumbledore the poison to drink, Harry takes a cup of poison (with a little left in the bowl). Harry approaches Dumbledore saying, "This is the last one you need to drink". Harry then goes back to the bowl and the remaining poison's suddenly gone, leaving the necklace fully exposed.b00n96
Corrected entry: During Aragog's funeral, Hagrid says he had him since he was an egg. In Chamber of Secrets Aragog says he came to Hagrid in the pocket of a traveler. Aragog had already hatched when he found Hagrid.
Corrected entry: When Harry first gets the old Book of Potions, he opens the front cover and sees the name Half Blood Prince. Later when Ginny pulls the book from him and reads the name to Hermione, she has opened the back cover and is reading the name from there. Later on Harry is again looking at the book, and once again the name Half Blood Prince is at the front of the book.movies00
Corrected entry: At the Great Hall feast where Dumbledore is addressing the students, he says Tom Riddle's name. Before he said that, there was a shot of the table that Harry and his friends were sitting at. Directly after Dumbledore says Tom Riddle's name, it goes back to the table, but Harry isn't sitting there anymore.
Corrected entry: If it wasn't for the contract that Emma Watson (Hermione Granger) signed to complete the last few movies, the Half-Blood Prince and to-be Deathly Hallows (to be made in to two movies) would not have happened. However, despite the success of the contract, Watson has revealed that she will no longer be acting after the last installment of Harry Potter.