- Continuity: As Ryan drives through the construction site with the window completely rolled down mud splashes up against the car and covers the entire driver's side door as well as the windshield yet Ryan remains completely free of any signs of mud.
- Factual errors: When the shooting occurs at the Santa Monica Pier, the responding officers are from the LAPD. Since the pier is within the Santa Monica city limits, the correct responding agency would be the Santa Monica Police Department, not the LAPD.
- Crew or equipment visible: Early in the movie when Ryan jumps in his truck, he closes the door and a crew member wearing a hat is clearly visible in the side window.
- Revealing mistakes: The Nokia 6600, used by Ryan to record the video showing the kidnappers executing people supports a maximum of 176x144 pixels when recording. However the clip displayed on the phone has a much higher resolution.
- Crew or equipment visible: When good cop Mooney fights bad cop Dimitri in the walkway by the pier near the end of the movie, the face of William H. Macy's stunt double is clearly visible at least once (when he's being shoved back into the wall), and both stunt doubles are semi-clear a couple other times in that sequence.
- Crew or equipment visible: When the mobile gives a low signal, seconds later in the attic you see a moving shadow of a crewman, since Kim is the only one there and she is not moving at the time.
- Continuity: Ryan records Chloe on his cellphone at the pier and she tells him that he is "iresponsible, self-centered and completely childish". When he watches the recording in the truck, she never says "self-centered".
- Continuity: When real estate agent/husband is at the bank safety deposit box, he pulls his key from what is clearly a box far too small to have stored the camera bag he withdrew.
- Continuity: Before Ryan goes driving in the construction site, the cell phone switches from being on the seat to in his hands and then back on the seat again.
- Factual errors: When Jessica Martin clicks the wires together to make a phone call, she first has wires apart and then taped them together to make contact for very brief seconds. This is contrary to how pulse dialing telephone systems work. In real life, you'd have to do the opposite. The wires should make contact, and then, break contact very rapidly for the number you wish to dial.
- Continuity: The dump truck that destroys the security car is driving down the street in the wrong direction.
- Errors made by characters (possibly deliberate errors by the filmmakers): When Jessica cuts the goon's arm she tells him that he will bleed 30 liters/minute. The blood flow through a brachial artery is nowhere near that much. During vigorous exercise the entire heart puts out a total of 30 L/min, but that's the sum total flow through every artery of the body. The flow though a single brachial artery is fraction of that. In addition, the goon was not vigorously exercising. At rest, the cardiac output is about 5 L/min.
- Continuity: When Ryan robbed the store to get a charger for his mobile phone, he connects the charger to the phone in his car. A few moments later the charger is gone.
- Revealing mistakes: In the scene where Craig is brought to the attic, you can hear Kim Basinger start to say "Richard." The character of Craig is played by Richard Burgi.
- Continuity: When Ryan is in the boathouse, he does not appear to be wet after diving into the water.
- Errors made by characters (possibly deliberate errors by the filmmakers): At LAX airport, when Ryan steals someone's boarding pass, the security only checks his boarding pass and does not ask for any ID like they would at the real LAX.
- Errors made by characters (possibly deliberate errors by the filmmakers): When Jessica is speaking to Officer Mooney, she clearly states that five men broke into her house. There were only four men involved and a female officer (Baybeck) who was not shown until after Jessica was taken to the safe house. Only three of the four men were shown entering the home.
>>> WARNING: Here Be Spoilers <<<
Goofs below here contain information that may give away important plot points. You may not want to read any further if you've not already seen this title.
- Continuity: SPOILER: When Jessica strangles the bad cop in the van, the chain of her handcuffs/shackles gets longer and longer: first it looks like 10 inches (25cm), but when she removes the keys from the cop's jacket pocket, her left arm is behind the seat. To do that, the chain has to be at least 15-20 inches, and you can see that clearly. (Why would cops use shackles or fetters anyway? They would use handcuffs with a very short chain.)
Related Links