Continuity mistake: When Gale is in the theatre and gets shot and falls from the stage, she has blood stain on her left breast (above the place where the shot wound appears). Yet later, when she climbs back to the stage, she has no blood stain, only the shot wound. (01:37:20 - 01:45:45)
Continuity mistake: Shortly after the scene in which the killer pulls Randy into the van, Gale and Dewey run to the van and see the blood. Right before they open the door, there is a camera shot from inside the van through the window. You can see that the window is not broken: it is obvious that there is some sort of white fabric over it. (01:06:05)
Continuity mistake: Sidney tells her friend Hal that she doesn't think she's going to be able to make it to the martini mixer party. Hal goes "Whaaaaaaa?" as she is folding a cute pink thingie, which rests in her lap. In the background in the next shot we see the pink fluffy towel is now further down on her knees. (00:13:55)
Continuity mistake: A pimple is visible on Sidney's chin as she says goodbye to Derek before getting into her ride with the two detectives and Hallie. Minutes later, in the scenes inside the car, the pimple has completely disappeared, even in the very extreme closeups.
Continuity mistake: When Derek dies after being shot, tied up on the stage prop, his head slumps down with it looking down to his right towards Sid with his forehead tilted to the left. When it cuts to another angle at a close up of Sid, suddenly his head is tilted the other direction. (01:37:40)
Continuity mistake: Cici throws a plant at Ghostface as she's running away from him, but it barely slows him down. They round a corner around the banister and he is chasing her right behind her, only about 2 or 3 feet behind her at most. But then it cuts to another shot and suddenly she's down a hallway and instantly put a lot of distance between herself and Ghostface before he's even entering the hall. (00:34:40)
Continuity mistake: After the accident - when the car is seen from behind - you can't see the killer (it's before Sid crawls over him).
Continuity mistake: When the girl - during the Stab film - touches her boyfriend's jacket and gets blood on her hands - in the second clip there is much more blood on her hands than in the first clip. (00:10:10)
Continuity mistake: In the beginning where Jada Pinkett Smith is stabbed in the back, you see a white girl to her right look down at her arm as Jada's blood lands on her. If you watch the background closely as Jad is dying and stumbling around, the same girl is still looking around, as if it just happened. (00:10:10)
Continuity mistake: In the make-out scene with Gale and Dewey, Gale's lipstick is smeared on her face, but there's none on Dewey's face.
Continuity mistake: When Sidney leaves her dorm room to head for the shower and Hallie follows, you can see the open wardrobe by the dorm door, and there is a jumper visible hanging from the wardrobe door. But when they walk back into the room to look at the news on TV, the jumper has moved and now there is a bag visible in front of it as well. (00:13:05 - 00:13:50)
Continuity mistake: When Phil and Maureen enter the cinema, Phil puts his arm around Maureen's shoulder. But in the next shot his hand is placed on her back instead. (00:01:40)
Continuity mistake: In her room at the start, Sid's hair is a little bit over her eye. She talks to her roomate and walks out of the room. The next shot her hair is perfectly behind her ear, but she didn't have time to put it back. (00:13:05)
Continuity mistake: Cotton shoots the killer, who when lying down has a giant hole in their throat. It wasn't there when both the killer and Sidney were falling backwards. (01:48:40 - 01:49:05)
Continuity mistake: When Sidney incredulously asks "Mrs...Loomis?" her left hand is raised at shoulder level, but her arm is straight in the next shot. (01:40:20)
Continuity mistake: When Mickey grabs the gun after the 'pillar fight', he holds it straight in the first shot, gangsta-style sideways in the next. (01:39:35)
Continuity mistake: Mickey and Sid at the beginning of their struggle end up facing each other with a Greek pillar between them. The position of their hands changes between shots, literally touching at some point depending on if Olyphant's hand is higher or lower. (01:39:25)
Continuity mistake: When Sid and Allie start freeing themselves from the wrecked police car, the metal pipe left a tiny hole in the grid, which is immediately larger in the next shot. (01:28:15)
Continuity mistake: At the dorm, Sid and Allie hop in the cop car with Sid in the left backseat and Allie in the right backseat. In the following scene they have swapped. (01:24:25 - 01:25:50)
Continuity mistake: Dewey removes a VHS from the VCR. The VHS has a black spine. A minute later they begin getting jiggy with it and in the shot from the front of the desk (the rear view of Mrs. Cox, if you prefer) you can see on the VCR a white label on the spine. (01:17:10)
