Continuity mistake: The inspector is showing the singer the gruesome images of her friend. As he says "It's how we identified the remains", she raises her right hand, but in the next shot it's with the left hand that she's touching her lips. (00:04:45)
Continuity mistake: After take-off, Mr. Anderson's hair changes a few times while he was talking to Rochelle. His bangs are combed back, but then he has strands hanging down his forehead and the top of his hair is dishevelled. After the camera shifts to Rochelle and back, Mr. Anderson no longer has the strands down his forehead but the right side is messy. When the camera shifts again, Mr. Anderson's hair is neatly combed back. (00:14:54 - 00:15:25)
Continuity mistake: When Charlie throws Scott over the balcony, he crashes into the chandelier and it partially tears away from the ceiling. Sparks ensue, but the light remains fully functional. The camera switches to Scott on the floor then back to Charlie where the chandelier can be seen worth all but one light out. There is no visible difference in the room lighting. Later, when Charlie is chasing Scott and Annie with the shotgun, Charlie screams "Lights out!" and shoots a fully functional chandelier.
Continuity mistake: Cory threw the tire iron across the road, where it landed near a tree in the second or third row (lower right-hand corner of the screen). Reina and Vlad walked well past that area, much deeper into the woods, where Reina found the tire iron - despite her even telling Vlad the tire iron couldn't have gone so far. (00:06:00 - 00:09:57)
Continuity mistake: The girl and guy are in a hotel room and she kisses him good bye. You see her go out of the door and the door handle is on the left side and no chain hanging. Then when you see the door a few seconds later the door handle is on the right and the chain is latched.
Continuity mistake: There wasn't much blood noticeable on the axe after it was used to chop off the mermaid's tail, but a little later when the man was carrying it over his shoulder, it was heavily covered in blood and dripping. (00:14:17)
Continuity mistake: When George gets shot, he lies flat on his back. When Gloria walks in on the scene, there's a closer view of him and he is lying on his side. (01:18:45)
Continuity mistake: The location and intensity of Lavinia's purple hair highlights vary throughout the movie. For example, the purple highlights on the right side were far more pronounced (two wide, distinct, vivid lines) when she got home compared to when she first met Ward. Lavinia rode her horse Comet home, so her hair would have been wind-blown and the highlights would not have been likely to be neatly straight down, especially since she has long curly hair. (00:05:10 - 00:07:13)
Continuity mistake: When the cop tells Tree to drop the ax, she lets go of it and puts her hands up. However, her hands raise and lower instantly between cuts several times depending on the angle. On the angle facing her front, her hands are up by her head. But in the angle behind her, they are down by her shoulders.
Continuity mistake: A couple times during the trip before stopping for gas as "The dead don't die" plays on the radio, Jack's arm moves from the top of the window to the bottom between shots (when the song goes "For the lights to shine down on" and when Zack passes him the energy drink). (00:39:15 - 00:39:50)