Continuity: When there are shots of the popcorn cooking on the stove, growing larger, in some shots there is a popcorn wrapper to the right of the stove, in others there isn't. Also Drew puts a silver salt pot down to the right of the stove, which has disappeared in later shots.

Deliberate "mistake": When Drew goes to answer the door to the trick-or-treaters, the table to the left of the door has nothing on it. Yet when Drew sees the killer, a banana, grenade, knife and gun are now lined up on it.

Continuity: At the start just after Drew is seen in the line of the sprinklers, the killer is seen walking towards her with his knife held high in his right hand. If you look closely in this shot you can see blood on the knife despite not stabbing Drew yet. In the next shot it is gone.

Continuity: At the very start of the film when Cindy hears a noise outside her window and goes to check, she was on her computer. But if you look closely when she stands up you can see that the computer isn't even switched on.

Revealing: When Cindy's dad gets his head stuck in the doorway at the start, to see if Cindy is okay, his head is not stuck as you can see a small space to the side of his face. It's not a lot, but enough to not get stuck.

Continuity: When Bobby and Cindy are in her room the first time and they're laying on the bed, in one scene it shows a TV next to her bed. The next shot it is gone. Then when Bobby starts to go out the window the TV appears again.

Visible crew/equipment: In the beginning of the movie in the scene where Cindy and Bobby are in Cindy's bedroom,the Dawson's Creek theme song just starts to play and in the bottom left hand side of the window, just before Dawson pops up and says "Wrong set" you will notice someone dressed in black start to creep up for a second, then Dawson pops up.

Continuity: In the scene where Buffy is getting out of her Dad's car and starts to walk over to Brenda and Cindy, you see her walking over a kerb in the street and the camera changes to Brenda and Cindy where, 1 second later Buffy approaches. I don't think it would take buffy about 2 seconds to cross that big a street,it would take 5 secs at least.

Continuity: Near the beginning Buffy tears off her dress and throws it on the ground. When they walk away there's no sign of it.

Continuity: After Heather is campaigning in the hallway of the school and giving out flyers, Buffy grabs the flyer and lets go of it, and is holding nothing. In the next scene where Buffy, Brenda and Cindy walk over to their boyfriends, Buffy all of a sudden has a folder, some books and a banana in one hand.

Continuity: In the scene after they look at Greg's report card, Ray has his hand on Brenda's ass, in the next angle it is on her shoulder.

Continuity: When the bottle is dropped in the car, it hits Cindy on the head and falls down in front of her. When Greg gets out he now has the bottle.

Continuity: The guy who stands up through the car's sun-roof, during the flashback, is holding an empty bottle, but when he is at the top of the car the bottle is nearly full.

Continuity: When the six characters are imitating the scene of I Know What You Did Last Summer, they get out of the car after it has spun around. All of the headlights are on, the two yellow and the two white. Later, if you look behind them, the left headlight is off.

Continuity: In the scene where they hit the fisherman, they spin the car. Notice the yellow line, they are somewhat over it in one scene, then in the next the line in to the right of the car, not under it.

Continuity: When the gang hit the guy with the car they all get out. When Greg gets out he only has the bottle in his hand but when the camera returns he is holding a flashlight

Continuity: In the flashback of the gang killing the fisherman, Shortie drives up in his car and just as someone says, "Brenda take care of them" there is a shot of the car with no smoke inside it. The camera cuts to a view of Brenda approaching and the car is full of smoke.

Continuity: After they dump the body in the water, Greg tries to get Cindy to agree to the pact. When she doesn't he starts strangling her. When he lets go, Cindy starts to reach her hands to her neck but in the very next shot her hands are at her sides.

Continuity: When Greg confronts Ray about the picture he found in the locker room, he shows them all and they start laughing. Buffy is on the left part of the screen, (on Cindy's right side), then Cindy explains that she got a note. Then when she says: "Somebody knows.", Buffy is more to the right (or left of the screen) than before. Then when Cindy says they have to call the police, Buffy's back to where she was at first.

Factual error: When Greg gets murdered and Cindy, Bobby, and Buffy are trying to figure out what happened, you can see the killer is mopping up the blood. However the floor is carpeted so the blood wouldn't clean up, it would smear instead.