Continuity: In ice chase scene, the rear window of the truck is shot out only to appear whole later (with snow smeared on it).
Continuity: After the ice chase, Charly and Mitch are driving to get the money. We can see two cars approaching them on the other side of the road. From the inside of the car we see three cars pass them.
Continuity: Before Charly starts to pour vodka into the shot glass, she picks it up. In the next shot, the shot glass is still on the counter as she pours the vodka in.
Plot holes: The truck had fail-safe brakes, meaning that cutting the brake line would cause the brakes to be locked on.
Continuity: At the end of the film, the car's roof comes loose but is fixed in the next shot.
Continuity: When Charly shoves Mitch out of the car, he is seen rolling over and up onto the sidewalk. In the next scene, he is shown laying on his back in the street.
Boom mic visible: During the scene in the train station, Charly has a beer at the bar. When Timothy begins to speak with her, an orange mic (and extender) are visible in the lower right-hand portion of the screen. You can see it in two different shots. It is present on the DVD and the video.
Incorrectly regarded as goofs: When Charly and her daughter are locked in the cold room you don't see their breath when they are talking, but it's not always visible in cold conditions.
Factual errors: Charly breaks free from her frozen prison by blowing off a heavy metal door. We see that the explosion bursts through at least two ceilings. Between the explosion and the ensuing crater, it seems highly unlikely anyone upstairs could have survived - or for that matter, left the basement through all the rubble.
Continuity: The amount of whipped cream on Samantha's fingers before she licks it off.
Continuity: When Samantha is thrown from her car after hitting the deer, she loses her shoes but she is wearing beige stockings. When she stands to walk through the snow toward the wounded deer, she is barefoot.
Factual errors: The amusement rides on the boardwalk in Atlantic City do not operate at Christmas time.
Crew or equipment visible: When Perkins orders his minion to trace Charly's initial phone call he steps onto a clearly visible mark on the floor.
Revealing mistakes: Immediately after you see Charly perform a "hockey stop," the camera pans up to her face. The bag on her right hip pops into existence. It is obviously someone else doing the skate-work and a cut to the actress Geena halfway through the pan.
Continuity: As Mitch flies out of the window, the chair that he was tied to has broken apart and flown away. But when he lands next to the tree, the knife and the chair bottom are there.
Continuity: During the scene when Sam is first cutting the carrot, she is shown cutting with two separate motions, depending on the shot. Generally, in shots where only her hands are visible, she is cutting by pivoting the knife against the board, raising and lowering the blade at the rear; in long shots, she is chopping by swinging the knife up and down from her wrist, raising and lowering the point.
Incorrectly regarded as goofs: When Caitlyn gets Charly back on her feet, a shot of the bomb timer shows 4:59 (four minutes, fifty nine seconds) to go. However, the explosion happens 3:46 (three minutes, forty six seconds) later. This is not a mistake since the countdown does not necessarily occur in real time.
Continuity: In the last shot of the car as they escape among the flaming wreckage after the explosion, both headlights are on. In the next shot on a country road, the left headlight has been smashed.
Revealing mistakes: Mitch's view of Charly carrying Caitlin through the night-vision binoculars shows the perspective of footage shot from a much closer position.
Errors in geography: There are no hills leading to any of the bridges along the Niagra Gorge.
Anachronisms: When Charly has one of her first flashbacks she sees Timothy and Jack from the vantage point of the trunk of a car. It is 1988. Timothy says, "She's the Energizer Bunny." Unfortunately the bunny didn't exist until 1989.
Incorrectly regarded as goofs: A call is traced to Niagara Falls. 716 is the area code for Niagara Falls. However, the film clearly shows that the receiver (Charly) is on area code 315 while the caller (the one they are tracing) is calling from number (716) 555 1304, which is indeed Niagara Falls area code.
Continuity: During the scene where Timothy cuts Charly, it shows her being cut on her right side, but after they fall down the shaft and after Timothy falls into the water, we see the wound on her left side.
Factual errors: The grenade in the station corridor is a fragmentation type. Fragmentation grenades do not produce huge rolling fireballs; and if they did, the fireball would spread much too rapidly to run ahead of.