Continuity: Lana smears lipstick on her upper right lip, but when she turns at the cat's noise, it is pressed and perfect-looking.
Continuity: When Pam, Tommy, and Reggie are going to see Demon, they pass the same rocks several times.
Continuity: Just before Junior is killed, the level of the stew Ethel is making changes from shot to shot.
Continuity: When Reggie finds the bodies in Tommy's room, Violet is first propped against the wall, but in the next shot, she is lying down.
Continuity: When Pam is running through the woods, her sweater disappears then reappears.
Continuity: After Reggie's grandfather flies through the window, his head changes positions between shots.
Continuity: When Tommy is dropped off at Pinehurst, the way he holds his bag changes between shots as he walks through the door with Pam.
Crew or equipment visible: As Joey walks over to Robin and Violet, who are hanging up washing, a large set of lights is reflected in the window as he walks over.
Revealing mistakes: When Ethel gets a cleaver in her face, blood spatters everywhere. Yet the cleaver blade is still clean.
Continuity: When Pam finds her co-worker with a screwdriver impaled in his forehead, the amount of blood on his face changes between shots.
Continuity: As Jason approaches the smashed barn door, some of the wooden planks in the left side of the door disappear between shots.
Continuity: Jason chases Pam with a clean machete, however in the shot just before he's hit by the tractor, the machete is bloody.
Boom mic visible: The ambulance is called to Pinehurst. When the ambulance comes to a stop the boom mic can be seen in the bottom part of the rear window.
Continuity: Jason stabs the machete vertically into the man's stomach, but when he pulls it out the machete is in horizontal.
Crew or equipment visible: When Billy pulls up outside the diner to pick up Lana, if you look into the window at the far right of the screen you can see a crew member hide into the corner of the diner so he won't be seen.
Continuity: When Demon is in the outhouse, the pull-cord hanging above his right shoulder disappears in some shots.
Continuity: Position and order of Sheriff Tucker's newspaper clippings.
Continuity: Jason's cut shoulder swaps sides.
Crew or equipment visible: When Tommy is at Jason's grave, a white reflector screen is clearly reflected into his glasses.
Continuity: When Tommy is at Jason's grave, the stones around Jason's grave are different between the close-up and the aerial shot.
Continuity: When Robin and Violet hang up the laundry, the distance between the pink towel and boxer shorts increases between shots.
Continuity: When Joey walks out onto the porch, he has a yellow chocolate bar sticking out of his sweater. In a following closeup it has gone.
Continuity: When Violet is dancing in her room, Jason starts to walk up to her and we see the knife has dried blood on it. Then he picks her up, stabs her takes the knife out and now the knife is clean.
Continuity: In the film Demon is in the outhouse and is sitting on the bowl when it begins to shake. The toilet paper changes amounts on the roll between shots.
Continuity: When Tommy throws the alien mask on the bed, it changes positions between shots.
Continuity: Jason is seen walking through the rain soaked grounds and woods, but yet when he climbs up the ladder at the end of the film his shoes are pretty clean.
Factual errors: When Vic is in the police car, there should be a screen separating the front from back seats.
Audio/visual unsynchronized: The sound that startles Lana was breaking of plates. But when she investigates, she finds the cat sniffing fallen pots.
Revealing mistakes: When Demon is using the outhouse, his pants are unzipped but not pulled down.
Revealing mistakes: When Reggie hits Roy with the tractor, the wound on his chest only appears after he has hit the ground.
Revealing mistakes: When Tommy goes to slice Roy's arm, you can see he is not really holding the machete in his hand.
Revealing mistakes: When Demon tries to exit the outhouse and finds Anita dead on the ground, her neck is visibly pulsating.
Continuity: When Jason is killing Eddie by squeezing his eye sockets with the leather strap around the tree, Jason turns the rope counterclockwise first but when it shows it snap from pressure he is turning it clockwise.
Revealing mistakes: When Sheriff Tucker shows Pam the newspaper clippings taken from Roy's wallet, plainly two of the columns in the article are identical and have nothing to do with Jason.
Crew or equipment visible: As Pete walks off into the woods, the cameraman's shadow is briefly visible on his back
Continuity: Before Joey's death, the chocolate on his face changes from shot to shot.
Revealing mistakes: Obvious stunt double for Tommy is beating up on Junior at the trailer park.
Revealing mistakes: Obvious dummy when Vinnie gets the road flare in the mouth.
Revealing mistakes: When Eddie finds Tina's corpse and rolls her over, she's still breathing.
Continuity: As Junior is riding around on the bike, right before he is murdered, you see the same clip of him turning and riding onto the deck twice.
Miscellaneous: Les is called "Brody" in the opening prologue. All of the subs and captions also read "Brody" when he's speaking. So, why is he credited as Les instead of Brody?