Continuity mistake: As Jason approaches the smashed barn door, some of the wooden planks in the left side of the door disappear between shots. (01:12:50)
Continuity mistake: When Tommy is at Jason's grave, the stones around Jason's grave are different from the closeup to the aerial shot. (00:01:20)
Other mistake: When Sheriff Tucker shows Pam the newspaper clippings taken from Roy's wallet, plainly two of three columns in the article are identical and have nothing to do with Jason. (01:21:35)
Factual error: When Vic is in the police car, there should be a screen separating the front from back seats. (00:20:35)
Continuity mistake: The position of the chicken changes as Ethel gives it it's last on-screen chop. (00:31:40)
Continuity mistake: After Eddie scares Tommy with the mask, on the wall there's a poster - "Four ways you can stop drug abuse...", with nothing under it. When Tommy beats Eddie up there's now another small sheet tacked up under it. (00:29:45)
Continuity mistake: Just before the spike goes through Demon's stomach, his gold necklaces change position between shots. (00:53:40)
Revealing mistake: After the "Friday the 13th" logo explodes, the supports that were holding up the model are briefly visible through the smoke. (00:05:40)
Revealing mistake: 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. (00:55:30)
Continuity mistake: Just before Junior is killed, the level of the stew Ethel is making changes from shot to shot. (00:56:00)
Suggested correction: That's because she keeps throwing vegetables and other ingredients into the pot.
Revealing mistake: When Tommy begins to beat up Junior, at the trailer park, you can see that it is a stunt double (who has darker hair) replacing Tommy. (00:49:50)
Continuity mistake: When Tommy is dropped off at Pinehurst, the way he holds his bag changes between shots as he walks through the door with Pam. (00:09:15)
Continuity mistake: After Tommy takes the prescription bottle out, and takes out a pill, pills scatter all over the desk. In the next shot the pills are arranged differently and some are gone, and also the pill bottle has gone. (00:26:20)
Continuity mistake: 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, then she is propped up again. (01:09:00)
Continuity mistake: As Reggie rides the tractor towards Jason, his hood keeps changing position, probably in order to cover up the stunt driver's face. (01:11:10)
Revealing mistake: When Demon is using the outhouse, his pants are unzipped but not pulled down. (00:53:00)
Revealing mistake: When Vinnie has a road flare shoved into his mouth, it is obviously a dummy as the road flare is inserted (his skin is much paler than in previous shots). (00:24:30)
Continuity mistake: When Reggie discovers the bodies, blood appears on Violet's face in between shots. (01:09:00 - 01:09:05)
Continuity mistake: When Lana carries the cat to the door, she is holding it in her right arm while she reaches out for the light switch with her left hand. When it cuts, from the outside view she holds the cat in her left hand, while reaching with her right hand. (00:36:00)
Other mistake: When Jason slices Pete's throat from the back seat with the machete, it goes deep, and blood should be gushing from Pete's jugular. But in the following shot, the edge of the knife has barely grazed the rest of Pete's throat, leaving only a fake trail of dried blood.
