Revealing: In the scene where Bert is running in the woods away from the local guys, he rubs blood on a tree to make them believe he ran a certain way. Look close, the tree already has red tint on it probably from previous takes that didn't wash off.

Continuity: When Marcy and Paul are hauling Karen into the jeep, Karen spits blood all over the windscreen. Then when we see the shot of Karen falling to the ground and shots after, the windscreen is pretty clean.

Continuity: In the scene where Paul and Marcy are having sex, you can see there is nothing on Paul's left wrist. The following shot of them Paul is moving his hands up her back and you can see he now has a watch on his left wrist.

Continuity: When Deputy Winston is talking to Paul, he takes his tinted glasses off, in his left hand. Then in the next shot he has them in his right hand, although he never swapped hands.

Continuity: When the rednecks are chasing the Blazer the Ford truck they're driving has round headlights. When the kid hits the deer and gets out the truck has square headlights and a different grill.

Revealing: When Jeff walks out the cabin and is shot by police, you can tell he's wearing a bullet-proof vest or padding.

Continuity: When Bert returns from shooting, he talks to Jeff and Marcy, when returning his BB gun hangs over his right shoulder. Shot changes and his gun hangs over his left shoulder. When it cuts to the last back closeup of him and as he walks away to the cabin, you can see the gun has jumped to being over his right shoulder between the shots.

Continuity: When the kids are in the shop near the beginning of the film, at the shopkeepers desk is a cardboard box, and next to it are some jars and tins. Between a couple of shots the jars/tins rotate and move position on the desk, and also two or three jars/tins appear then disappear.

Continuity: In the scene where Bert first realises he has the fever he crouches beside the car and starts coughing up blood. When he hears the others coming he wipes his mouth, leaving a small trail of blood on his chin, but when he stands up and talks to them the blood is gone and his chin is clean.

Continuity: In the scene where the blonde goes to kiss her boyfriend as they are floating on a platform in the lake, she rolls herself off the platform and completely submerges herself underwater. When she comes up for air, the scene shifts back to her boyfriend looking at her, then back to the blonde who is head above water and her hair is completely dry.

Continuity: When Marcy, Bert, Jeff and Paul are in the cabin talking about the fact that maybe they should prepare their own meals, during the conversation before the scrap between Jeff and Bert, watch Marcy who's sitting on the couch. Between shots she goes from having her hands up in the air, to folded or down in her lap.

Revealing: In the cave scene, when Paul finds Grim's body, during the "worm in the ear" shot, Grim's neck is moving quite visibly with his pulse.

Revealing: On the first night that the teens are camping, one of the guys is telling a story about the bowling alley. During the story, they show the "happy, bald guy." Without even looking very closely you can see that he is not bald, but wearing a bald cap.

Revealing: When the police are throwing the bodies on the fire near the end of the film, the body that gets thrown on top is obviously a doll. The body on the bottom looks like it possibly could be, but the one on top is definitely one.