Continuity mistake: The left tail light of Sadie's car is broken when she picks up the unfortunate hitchhiker. The light works when she turns left off the road. (00:36:20 - 00:38:35)
Continuity mistake: After Eisenheim has disappeared, literally, from stage, Uhl and the policemen search his office. There, Uhl finds Eisenheim's notebook with the design of the locket in it. There is a large tear in the middle of the paper. It disappears when the inspector looks at it again after he has found the locket in the Prince's barn. (01:31:00 - 01:31:45)
Continuity mistake: When Barris is served in the diner, french fries are scattered over his plate. When seen again, the french fries are replaced with vegetable sides.
Continuity mistake: At the end of the film, Victor tells Nick to write 'hey Annie' on plane's wing to send her a message. When Nick throws the plane and the camera shows it flying around, the words that Nick wrote are nowhere to be seen.
Continuity mistake: After Teddy takes his dead daughter's shoe off, its position changes between angles.
Continuity mistake: In the final scene on the bridge, Spock and McCoy are wearing colored arm bands which identify their departments: Spock's is orange (for Science) and McCoy's is green (for Medical). In the very last shot, Spock is wearing the green band and McCoy is wearing the orange one.
Continuity mistake: When in the grocery store, the produce next to Esther keeps changing when Kate gets the phone call. (00:46:30)
Continuity mistake: When Agent Desmond is waiting to see Sheriff Cable, the position of the hand supporting his face changes between shots. (00:08:00)
Continuity mistake: The last two pictures on the left on the wall going up the stairs change continually throughout the movie, at least 10 times. (00:24:35 - 00:26:35)
Revealing mistake: In the barber shop scene at the end of the film, Agent Anderson terrorises Deputy Sheriff Pell (who has a full head of hair) with a razor blade. Anderson throws him across the room, but the person being thrown across the room has a mostly bald head.
Continuity mistake: The first time we see her, Jezzie is talking to Megan. She is holding her clipboard with the hand placed underneath it or above it depending on the angle. (00:05:40)
Continuity mistake: Sydney gives her phone to Liv at the prep rally to film her first dare. The case has a very distinctive blue furry case. However in one shot of Liv filming Sydney, it has a black and white case. This cannot be anyone else filming as it shows Liv's arm. Also the nail polish changes color. (00:07:20)
Continuity mistake: During the whack-a-robot game, a big chunk of the broken robot lies on the counter, but it disappears a shot later.
Visible crew/equipment: After they've killed the snake, Alice says "Is it dead?" and as the camera pans up, the boom mic's shadow is visible moving across the wall, directly over Ned's head and the red box. (00:26:05)
Other mistake: In the original version of the film there's a mistake in the opening credits where Colin Blakely's name is misspelled as Colin Blankey.
Continuity mistake: In the hotel scene where Gavin is murdered, after speaking w/Darby, he eats one of the chocolates on his pillow next to the night stand. He leaves the chocolates and the Westin card on the pillow/bed. Then when they show a shot of Gavin sitting on the bed brushing his teeth while Khamel hides in the closet waiting to murder him, the chocolates and the card are gone. Then, after Khamel murders Gavin, the chocolates and the card reappear back on the pillow as Khamel walks over and eats one. (00:59:55)
Continuity mistake: When Scottie (James Stewart) visits a bookshop to question its owner, the book display in the shop's window changes between the time he enters and exits the store. (00:33:50)
Continuity mistake: At the very beginning, when Quaid has finished showering and is picking his phone, wallet, badge, keys, etc, there is a shot of his hand as it is picking up his cellphone. Cut to a wide shot of him and the objects have moved. For example, the coins have become a close cluster, his pack of cigarettes is no longer on the newspaper, and his badge has switched places with the lighter. (00:02:45)
Revealing mistake: Ryan Reynolds is wearing red-eye contacts. You can see the whites of his eyes around the red circle of the contacts in several scenes - most noticeably, right after the home movie he's watching down in the basement melts.
Suggested correction: Not a mistake. Ryan Reynolds actually had bloodshot eyes from being awake for nearly two days of filming. He stated it in an interview for the movie.
Continuity mistake: During the scene where Fletch is at the hospital trying to locate Stanwyk's medical records, he drops lots of files on the floor and asks a nurse to sort them out. When he is talking to her he has a stethoscope in his ears, but when the camera moves behind him they are suddenly round his neck. Moments later they are back in his ears. (00:18:10)