Continuity mistake: In the scene where Michael and Maria were pulled over for speeding down the highway, Maria's seatbelt switches from being belted to not belted and back again. When it is seen from Michael's side of the car the belt is connected, but when it is seen from Maria's side of the car it is not. (00:17:20)
Continuity mistake: When Max, Isabel, Liz and Maria meet up in the woods after they left the camp site to go to the crash site Max and Isabel walk off and leave Liz and Maria on their own. Max walks past a tree but when Liz and Maria catch up Max is standing next to the same tree waiting for them.
Continuity mistake: When Moss and Topolsky are talking in the alley after the hospital, Moss' arms on the door keep shifting. First he's leaning on the car with his palms, then he's leaning on his elbows with his arms crossed, and later they're crossed the other way. (00:18:05)Phoenix
Plot hole: In the lab when Liz makes the slides of her cheek cells and the cells from Max's pencil, the first time she doesn't add stain and the second time she does. If she's going to be a molecular biologist she really ought to learn to apply techniques consistently. (00:07:30)Phoenix