Continuity mistake: When at the diner's Gale answers "Well, I have written the definitive book about the Woodsboro murders", her arms are open; her hands were joined earlier. (00:28:30)
Continuity mistake: In the scene where Dewey and Gale are having lunch, Dewey asks her "Why would the police come to you?" In the background, a waitress in white walks by. Then they switch to Gale and the waitress has vanished. (00:28:30)
Continuity mistake: The first time Gale goes to Jennifer's house, if you look when Dewy gets out of his car the window is down. Look quickly to see when Dewy closes the door the window is up. (00:30:40)
Suggested correction: I really can't see it. He gets out of the car and closes the (car) door in the same shot so it's not that. He gets out of the car (the window is indeed down) and then goes to the front door, but he does not close that door, and from there you can't see the driver side window anyway. Am I missing something?
Continuity mistake: Look at the shirt David Arquette is wearing when he's out at lunch with Gale, heading then to Jennifer's house for the first time. They learn about Sarah's murder and head to the crime scene, and Arquette is wearing a different shirt he'll wear for the party later. Admitted by Wes Craven himself in the DVD commentary track. (00:33:40)
Continuity mistake: After the scene with Posh Spice's former bodyguard giving 'Dewdrop' a piece of his mind, we see the detectives at work. The hands in close-up hold one of the photos by the bottom, but in the wider angle detective Wallace is holding them by the sides. (00:33:45)
Continuity mistake: When the cops go talk with Roman to ask him about his meeting with Sarah Darling, you can notice that Jennifer's bodyguard grew longer sideburns in the space of minutes since the scene at the house. Noticed by producer Marianne Maddalena on the DVD commentary track, and apparently they had some talks on set about that. (00:35:00)
Continuity mistake: Confronted by the cops, the director says "I did not call Sarah Darling." In the background, look at the dark-haired extra that joins the other two by some stage equipment. A couple of cuts later she's just walking by them. (00:35:10)
Continuity mistake: The second time Gale shows up at Jennifer's driveway (right before the place blows up), one can clearly hear her turn off the lights and remove the keys from her car. Yet, when she opens the door, the car still makes that beeping noise that happens when you leave your headlights on or leave your ignition key in the ignition. (00:37:10)
Continuity mistake: When the bodyguard finds Gale eavesdropping on Dewey and Jennifer, they soon confront each other and Tom is sitting in a chair with his left hand on the arm rest. In the next shot Tom is smoking a half finished cigarette with his left hand, but he had no time to change the hand with the cigarette in it between shots. (00:40:00)
Continuity mistake: Steven Stone picks a few coins from Dewey's counter. You can see that there are 5 left in the wide shot, but only 4 in close-up. (00:42:10)
Continuity mistake: Jennifer's house, the door just opened on its own. For some reason, Angelina and Tom don't shout back at Dewey and ask what's up, but rather jumpscare him. With Dewey's gun pointed at him, Tom has both hands in the air. In the same shot he lowers the right hand, but in the next he's with both hands up again. (00:43:20)
Continuity mistake: Stone falls face down in front of the entrance, his arms raised forming (very roughly) right angles. When Dewey screams to the others to get inside, Stone's left-hand touches his head. (00:43:45)
Continuity mistake: When the actors, Gale and Dewey are hanging around in Jennifer's house, they realise a fax is coming through. When Jennifer first approaches the machine, notice that there is actually no paper in the machine. A few shots later, the paper supply has suddenly been replenished. (00:44:20)
Continuity mistake: Jennifer is reading the fax page using her flashlight; without moving her hand, she holds the sheet by the top corner at first, then in the bottom half. (00:44:25)
Continuity mistake: At the part where Sidney is on the set of her house and the killer is chasing her up the stairs, she runs right by the plants, but in the next take she is right next to the plants just about to throw one. (01:05:25)
Suggested correction: Sorry but no; she runs by -some - plants, and in the next take she is right next -other - plants, which she throws at the killer, who is just passing by the -first - plants. You can see both plants at the same time on screen if you are watching a version in the proper format.
Continuity mistake: Before Sidney pulls the killer out of the door on the house set, we see the bedside table is lengthwise against the wall. As the killer falls towards the bed it's turns 90 degrees, so the bed is a bit closer to the door. (01:05:45)
Continuity mistake: In the scene where Gail and Dewey find the killer's voice changer, Gale's hands are clean, but when it shows her hands picking up the device, there's dried blood on them. But when it shows her hands again, the blood's gone. (01:16:05)
Continuity mistake: When Gale finds Roman in the coffin, there's no blood on Roman's elbow when the shot is closing in on the coffin. When Gale opens the coffin, the elbow is covered in blood. (01:17:40)
Continuity mistake: When Jennifer is in behind the mirrors, we see that she was by the 3rd mirror from the end when the killer stabs her. However Dewey had already shot that glass out and only 2 were remaining out of the 6. (01:24:50)
Continuity mistake: The knife that was thrown at Dewey left the killers hand with blood all over the blade, but was perfectly clean when the butt of it hit his head to knock him out at the top of the stairs. (01:26:55)
Suggested correction: Watch in slo-motion the sequence when he gets hit and you'll see the blade is bloody even during that. He then pulls out of his sleeve (literally!) a clean knife, but it's not supposed to be the original one, since he never retrieved it.
