Continuity mistake: When the girls are looking for food in the container, the blouse straps from the girl on the left change position frequently.
Continuity mistake: When Tyler injects Brigitte for the first time at the hospital, look carefully at the syringe. You'll see that in the first shot its content is 1/3, and in the following shot is now 1/2 full.
Continuity mistake: Near the end of the movie, Kate's hair is wet and she has a bloody nose. When she finds the platform again her hair is a lot dryer is and her nose is not bleeding.
Continuity mistake: When Joey is participating in the concert he goes along with pretending to be cut up. His jeans are clean until they put him on the glass table, when they're covered with fake blood. In the next shot, they're clean again and they start to cut him apart with the fake chainsaws.
Continuity mistake: When Lynn first finds out about the Olson murders, their house is two doors down from where she is house sitting. Later on, when Detective Peters mentions the murders in passing, he states that their house was three doors down.
Factual error: In the scene when the kids are on the boat hunting the snakeheads, Amber fires at least eight shots from a six shot, snub-nose revolver. Her friend then grabs the gun and fires two more shots from it.
Continuity mistake: When Ash breaks the window in the house at Long Island all the glass disappears in the window, apart from a little at the top. However, in the next shot when Telly and Ash walk through the window, all the glass has vanished.
Continuity mistake: After the sergeant has a parasite bug forced into her, she grabs a syringe kit left on the table by the medic. When she flips it open, there are 7 (maybe 8 at most) syringes in the kit (the last one is broken). A few moments later, private Sandee follows a trail of syringes left on the ground to the sergeant. There are at least 7 syringes on the ground, and 3 others in the sergeant's thigh.
Deliberate mistake: After the killer nails Shannon to the ceiling, he apparently has time to remove all the nails from the wall where he originally shot her, spackle, paint and clean up all the blood before the police arrive and examine the apartment.
Continuity mistake: When Kirstie Alley is having a breakdown on the news set, the arrangement of the yellow papers next to her changes between shots.
Visible crew/equipment: After making love with William in the bedroom upstairs, Annabelle is sitting on the bed. The closet door creaks open and you can see an arm holding a stick move back into the closet after pushing the door open. It is visible just to the left of the chair by the closet door. (Film was viewed on The Movie Channel.)
Plot hole: During the end of the film chase scene, Agent Mackelway calls Agent Kulok and gives her a vague location of where they are and asks for back up. Considering Mackelway had been kidnapped and driven out into the country, it should have taken Kulok much longer to arrive at the scene instead of the few minutes that are indicated.
Continuity mistake: The amount of dirt and blood on Tina's face and hair constantly changes between shots, from a lot of dirt and blood to some dirt and blood, to none at all.
Factual error: A murder investigation would not be handled by a Detective Constable (he says he's in charge). Detective Chief Inspector is the usual minimum rank for a senior investigating officer, and such a high profile murder investigation is likely to be under a higher ranking senior officer.
Continuity mistake: When Bridgett says "Ginger, we've lost our way " in the beginning, Ginger goes from looking forward to looking to the side between cuts.
Continuity mistake: When mixing drugs to overdose the others in their kitchen, while wearing a gas mask, Richard (soldier) has long hair, yet throughout the rest of the film he has short shaved hair.
Continuity mistake: In the scene where Rennie drives to the "Towers Motel" in the exterior shot the car is casting a shadow to it's left. In the next shot (interior view), the trees standing outside cast a shadow to their right.
Other mistake: After the cops pull Kevin Dillon from his car with aluminum foil on the windows, the aerial view reveals that both black and whites have the same number - 405 - painted on the roof.
Continuity mistake: Simon gets groceries, carries them home in two bags, and is then in the hallway without any groceries. It is never clear that he sets them down. (01:20:35 - 01:21:40)
Factual error: Throughout the film, Lieutenant Choi and his platoon use a radio with a handset to communicate with their base. The radio however has an H-250 handset, which wasn't introduced until 1987, and the film takes place in 1972. The radio handset should be the H-189, which is the correct model for the Vietnam war from 1966 onwards.