Continuity mistake: The 70s vintage green Plymouth belonging to the secretary, has what appears to be an inspection sticker on the driver's side of the windshield. However, when the vehicle catches fire near the end of the movie the sticker is missing.
Continuity mistake: In the scene were Jack is getting ready to fight, he tells the family to run. Notice how their handcuffs are still on. Later on, Jack goes to the family, and somehow someone had a key.
Continuity mistake: The pickaxe handle that Jack reaches for when he and Cox are fighting in the grave changes position and then back to its original position in quick cuts before he grabs it. Look very closely.
Continuity mistake: When Jack shows Cox around the server room the first time, he shows him that there are no longer any service terminals, for him to run the program Cox has brought along. Whereas when they bring in the home-made scanner, there's suddenly a terminal for them to use. Why couldn't that terminal have been used the first time?
Continuity mistake: When Jack first arrives in his office at the bank after his family has been kidnapped, as he is sitting down, the phone on the table in front of him is sitting at an 8 o'clock position. Next shot shows the phone sitting at a 6 - 7 o'clock position. (00:26:50)
Continuity mistake: When Jack pulls over the railroad tracks in the green Dodge, the headlights are missing. Just a few minutes later Jack is driving over the wooden bridge with headlights right where they should be.
