Continuity: In the garage, Tatum slams the fridge door into the killers face, the killer knocks the door with his arm, and it opens fully. But in the next wide shot of the killer getting up, the fridge door is closed. (Time) Submitted by Hamster

Visible crew/equipment: When Sidney is calling out "Dewey, Dewey where are you?" when alone outside, you can see the reflection of someone in a white jacket walking past Dewey's police car. (Time) Submitted by Hamster

Audio problem: When Tatum throws the first beer bottle at the killer, she yells out, "F***er," but her mouth doesn't move. (Time)

Continuity: When the whole gang is watching Halloween, they see the scene in which Michael Myers impales a victim with a knife, which suspends him from the wall. Just before Randy pauses the movie, Michael Myers is standing and admiring his handiwork. When Randy pauses it, the frame is of Michael Myers raising the knife, which of course, happened 10-15 seconds ago.

Continuity: When Sydney is talking to Tatum and Stu by the lockers, the combination locks she's standing by are black in a closeup, but when a student runs past in a scream costume, she is by lockers with a pink and a turquoise colour lock. (Time) Submitted by Hamster

Continuity: When the killer and Sydney are fighting by the front door, the killer takes the knife and is ready to stab Sydney. Then Sydney kicks him, and he goes flying, then watch as it goes to a wide. He is now much higher in the air than he was a moment ago. (Time) Submitted by Hamster

Factual error: Gale Weathers points the gun at Billy and tries to shoot him, but the trigger doesn't pull back. This is explained by Billy when he says that the safety was on. Fine. But that gun is a Beretta 92F, and on a Beretta 92F when the safety is on, the trigger WILL pull back, but no round will fire.

Continuity: When Stu puts the voice box and phone in Sidney's dad's jacket pocket and lets him fall, when he hits the ground the voice box partly falls out, but then when they show the dad again the voice box is tucked back in.

Revealing: When Sidney sticks her finger in the wound made when Sidney stabbed Billy with the umbrella, Skeet Ulriches skin pad visibly does not connect with his neck.

Continuity: When the killer sneaks up on Randy, Randy is lying back against the sofa. When Ghostface raises the knife Randy is lying back, relaxed with a tired look on his face. On the delayed footage when the killer raises the knife, Randy leans forward and is practically on the edge of the seat, his mouth and eyes wide open.

Continuity: In the beginning of the movie when Casey and the killer are on the phone, she locks the front door and says "I am two seconds away from calling the police." If you look at the door while she is locking it, you will see that there are three glass windows at the top. When the killer rings the doorbell, it shows the door and it now has nine glass windows. (Time)

Continuity: At the beginning of the film, Casey is cooking popcorn on the stove. When she peels the top off, you see her peel the side away from the handle, and she's using her left hand, but when the shot changes, she's using her right hand, and is pulling from the other side. (Time) Submitted by Hamster

Factual error: During the scene where the group of friends is watching Halloween, one boy says something like "Why do they do that? The blood is all wrong. It's too red.". The problem is, during that part of the movie, no blood is shown or even implied. Bob is just pinned against the wall.

Factual error: In the space of 15 seconds (between the time Casey's mom hears her daughter on the phone and the time when she walks out her front door and sees Casey) how did the killer manage to tie Casey onto the swing? It would have taken quite a while to lift her body and twist the ropes around her tightly enough that they held.

Other: When Casey's parents hear her on the phone, the scene shows just the killer with the knife pointing down. When he stabs her the knife quickly moves backwards in the opposite direction.

Continuity: When Sidney and Tatum arrive at Stu's party, they are dropped off by Dewey. Then the two girls walk to Stu's house. The bags Tatum is carrying are switched when they are walking inside the house (when she says "Catering is here").

Continuity: When Sidney goes back into Stu's house after the killer tried to catch her in Dewey's car, she takes the gun out of Dewey's holster. The ends of her hair are wet with blood. But after she discovers that Billy is still alive after being stabbed, she goes over to him to help him up. The ends of her hair are completely dry.

Continuity: When Randy explains the "Rules" to everyone and mentions the rule of no sex only two guys throw popcorn at him.Also they only throw one piece at a time, yet when Randy says "Big nono, big nono" you can see bucketloads of popcorn flying at him.

Continuity: At the party at Stu's house, when Dep. Dewey is walking through the house looking for the killer, Dewey walks into the living room with the TV and couch. Look at the TV, there is a white phone sitting right next to it. Later, when Sydney and Stu are fighting and she is about to push the TV on top of him, the white phone is gone. The TV also appears to be bigger.

Continuity: When all the guys are sat outside of the school talking about who (a male or a female) is the murderer, Tatum's leg is behind Stu's leg. In that same action, we go to a close up and suddenly Tatum's leg is in front of Stu's leg.