Continuity mistake: When Blair asks Mitch "why aren't you answering me?" he says he got a weird message from Laura Barns. Blair replies "that's not funny" and Mitch replies "I'm serious." Then Blair gets a message from Laura, and when she switches back to Mitch's conversation, the last two entries, "that's not funny" and "I'm serious" have disappeared. (00:10:50 - 00:12:30)
Continuity mistake: On the airplane, the shark bites off April's hand at about the wrist area, but when Fin pulls the gun in April's hand out of the dead shark, the severed limb is an entire arm up to the elbow.
Continuity mistake: When she is watching General hospital, the baby in the crib has no shirt on. When the TV goes off and the baby is crying the child has a shirt.
Continuity mistake: The girl that Jesse brought into the house, Penelope, was wearing a blue skirt with leggings when they arrived at the house. However when she walks around the corner to take off her shirt she comes back with just black leggings on.
Continuity mistake: Chilling on the couch watching a movie, Jay's friend farts. Obviously well practiced in the discipline, it takes her merely moments within the same shot to perform the necessary adjustments after the emission and place her index finger back on the dainty seashell lid of her media device. But in the next shot, as she proudly smiles basking in the warm glow of her successful feat, her finger is off the lid. (00:07:00)
Continuity mistake: Carrie's height changes constantly.
Continuity mistake: The glass window the guy jumps through shrinks in size and has more glass in it in the next shot, when the copper looks through it. (01:03:00)
Continuity mistake: At the end of the movie after sergeant has been shot, they are rushing him to the hospital. Watch the headrest of the passenger seat. It is in place, and then when he is getting in the car, the headrest is gone. Then, it is back in place again.
Continuity mistake: At the end when Sarchie is hugging his wife, in one shot the bandage on his arm has unravelled. In the next, it is neatly wrapped.
Continuity mistake: Toward the end of the movie, when Sarah joins Laine in her room, Laine's arm is on the back of the couch; but right after Sarah sits down next to her, Laine takes her arm and puts it on the back of the couch.
Continuity mistake: There is a scene where she accidentally stabs someone - she gets blood all over her from the stabbing and then in the very next scene is wearing the same shirt without blood stains.
Continuity mistake: When the plane is on the ground, it has two engines. When it takes off, it has four.
Continuity mistake: When the crocodile catches the man he bites his right foot off. 5 seconds later as he falls into the water his foot is back. (01:21:05)
Continuity mistake: When Newgate is feeding the blind woman in the asylum, the position of her hands on him when he is pretending to be her son keep changing from the chest, to his neck, to his head.
Continuity mistake: At the end of the film we see stuff being crossed out in a notebook. The lines that are drawn through the words keep changing from being perfectly straight to being at an angle.
Continuity mistake: Roy is on his back at one point, seemingly knocked out. A shot later he's suddenly on his stomach before regaining consciousness.
Continuity mistake: The car has rally seats through most of the film but at the end it has regular car seats.
Continuity mistake: When April shoots the alien, they all go outside to look at it. Behind them, you can see the windows boarded up, but they don't board them up until later in the movie.
Continuity mistake: The students' 3rd game is Kagome with 4 Kokeshi dolls. The pink doll starts to the right of the first student to play, the dolls move in a circle around him, she passes in front of him and by the end of the shot she is near his left. The Kokeshi dolls all move backwards between shots and the pink doll passes in front of the student again. After this, she takes 7 seconds to move about 100° despite nobody slowing down and she took that amount of time to move about 170°.
Continuity mistake: As the jeep with the killer goes over the cliff and smashes face down you can see nobody is in the jeep as it disintegrates the front part. (01:14:00)