Continuity mistake: Near the beginning, when Francine and Evan are smoking while sitting on the car, the shots from the side show Francine with one leg bent and one stretched, while those from in front show both legs bent. (00:14:00)
Continuity mistake: At the beginning of the movie, when the male hiker gets killed, the blood drips onto the girl's face. Some blood drips by her left eye, and she wipes it off, with a slight smear remaining. The drop then reappears unsmeared, then is smeared again in another shot.
Continuity mistake: When Chris Jessie Carly and Scott are at the Dead End Sign, if you watch Chris, he is looking at Carly and Scott, then looking away then back to looking at Carly and Scott all in continuous shots. (00:21:35)
Continuity mistake: At the beginning of the film when we see Chris waiting in traffic, in one shot you can see his hand on the steering wheel. In the following shot it's not. (00:06:25)
Continuity mistake: Close to the beginning after Chris crashes into the 4x4, he gets out of the car, and says sorry, and puts his left hand up, but in the following shot he has his right hand up, then back to his left. (00:11:45)
Answer: The chosen answer is incorrect. In part 2, the old man turns out to be one of them. He tells Dale, you killed my boy! The 3 cannibals are his sons.