Continuity mistake: When Marcy first runs out of the cabin, just before she dies, her chest is clean. But in the few seconds it takes her to run to the nearby toolshed, somehow her chest gets covered in splotches of blood. (01:10:45)
Continuity mistake: Marcy made it all the way to the toolshed before the dog caught her and started mauling her, but her severed foot is later found only a few yards from the cabin. (01:11:20)
Continuity mistake: 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 mistake: 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.
Continuity mistake: Right at the end, when Paul checks on Karen (obvious dummy), she is lying on her right side while the dog is attacking her. After Paul gets chased out by the dog and kills it, he returns, and Karen is now on her left side. She didn't have the strength to move when the dog was biting her, so how could she turn over?
Answer: They don't know about it. The only resident in town to contract the disease was the hermit. The sheriff even remarks to Deputy Winston on his radio that the kids at the cabin were going on a killing spree and that they had some kind of skin disease, indicating the disease was heretofore unknown to them. It's possible that the hermit's dog was the carrier.
Phaneron ★