Continuity mistake: In the scene where the Chamber finally opens, we first see Harry, Ron and Professor Lockhart from the front, and Harry and Ron are slightly behind Lockhart, and in a position to threaten and guard him. When you next see them a moment later from behind, Lockhart is behind them and they are in no position to guard him. (01:58:45)
Continuity mistake: In the breakfast scene at the Weasleys' house, when Mrs Weasley tells her husband about his sons flying to Harry's house to rescue him, he has something on his fork. Then he asks Harry about rubber ducks, and he cuts up something else. But when he finishes, the only thing on his fork is the original item. (00:13:00)
Continuity mistake: When Harry and Ron are talking to Myrtle when she said somebody threw a book at her she turns around and starts crying. If you look when she starts crying her face is all screwed up. When the camera angle changes when she stops turning and walks off, her face is no longer screwed up. (01:27:00)
Other mistake: When the car crashes in the Whomping Willow, it is turned and moved around a couple of times. Meanwhile, Hedwig is sitting on her perch, not moving at all. (00:26:45)
Continuity mistake: After being tossed out of the car, Ron and Harry chase after it when it drives off. In the wide shots, as they run through the outside corridor and when they stop at the arched doorway, their breath is visible in the air around them. Whereas their breath is not visible in the previous or following shots. (00:28:30)
Continuity mistake: When Harry and Lockhart are in Lockhart's office, Lockhart has just signed a picture. When they show a side view of Lockhart, the picture appears to not have a signature on it. (00:41:40)
Continuity mistake: In the scenes where Harry & Ron are trying to get away from the spiders, the car windshield goes from not being broken to being broken constantly, from the time it comes over the hill to when it drops them off at school.
Other mistake: When Harry is talking to Dobby in his bedroom on Privet Drive, Dobby begins banging his head against the dresser to punish himself. If you look closely, you can see that there is a slight delay between the time that Dobby's computer-animated head appears to hit the dresser, the time you hear the thump, and the time when the drawer moves and the dresser shudders. (00:04:10)
Revealing mistake: In Harry's bedroom, when Harry and Dobby grapple with the lamp, just as Harry says, "Give me the lamp!" Dobby's left hand is between both of Harry's hands gripping the lamp stem, but in the reflection we do not see Dobby's hand, or arm, as he moves about on the desk, nor do we see the fingers of his right hand which grips the base. In this shot what we do see in the reflection are Harry, his hands, the lamp base, stem, shade and cord. No Dobby. (00:05:30)
Continuity mistake: When the Weasleys and Harry get their Hogwarts letters, there is a shot from behind the twins. If you watch Mrs Weasley you will see that Harry gives her his Hogwarts letter. She holds it with one hand. When the shot changes she is holding it with both of her hands. (00:13:55)
Continuity mistake: When the car lands in front of the Burrow, it touches the ground just in front of a small shed and passes it within seconds. An angle change then shows the car driving past the same shed. (00:10:40)
Continuity mistake: When Harry falls out of the fireplace in the store, his hair appears to have dust all over it, but when he is outside, in Knockturn Alley, his hair is clean. (00:15:15 - 00:16:25)
Continuity mistake: In the scene where Harry puts the sword through the head of the snake you can see that only about half a foot of the sword is covered with blood. Then later in Dumbledore's office, when he asks Harry to take a closer look at the sword, you can see that there is blood over almost the entire sword. (02:13:50 - 02:20:50)
Other mistake: Dutch DVD Only: After the duel Harry tells he told the snake to keep away from Justin. In the subtitles, Justin's name appears untranslated. Later when Justin falls prey to the Basilisk he is called by name again but this time his name is translated to Dutch in the subtitles, namely "Joost".
Revealing mistake: While in the Whomping Willow, there is a shot from the interior of the car showing the windshield receiving two large cracks. In the next exterior shot, as the camera pans out while the boys scream, the blue hood of car is seen (with the lack of wiper blades) and the windshield has NO damage whatsoever, as well as when the tree limb comes through the back window, in the two front shots the blue hood is seen and the windshield is intact again. (00:27:15)
Continuity mistake: Right at the very start when Vernon grabs Harry's ankle during his escape, his grip on the ankle changes instantly. (00:09:25)
Visible crew/equipment: In the Dueling Club scene, as Snape says "Don't move, Potter, I'll get rid of it for you" and walks towards the camera, a film crew chair can be seen on the left side of the screen.
Visible crew/equipment: After ejecting Harry, Ron, Hedwig, Scabbers and all their belongings out of the car, just before Ron's door slams shut, the metal rod attached to the bottom of the door to pull it closed is visible. (00:28:20)
Continuity mistake: When Harry drinks the Polyjuice potion you can see his hand, but in the next shot his robe sleeve is over his hand.
Chosen answer: After Harry hands it to Lucius, Lucius hands it to Dobby to carry. After Dobby is freed by the hidden sock and protects Harry from Lucius, Lucius leaves it behind.
Greg Dwyer