Continuity: When Nicholas and Christine are starting to leave her appartment after Nicholas smashes the smoke detector, Christine puts on her coat, then the camera cuts to the CRS van. When the camera cuts back to her, she only has the coat on her right arm.

Continuity: When Nicholas pulls Christine out of the elevator he is standing just above it and reaching through the opening. But in the next wide shot from outside the cabin he is pulling her through the door a few meters above the cabin.

Plot hole: Towards the end, when Nick is holding Christine hostage in the CRS cafeteria, when the waiter drops the tray and the guards start shooting, Nick & Christine take off and run along the back and out a rear door into the stairwell. He does not look back to the rest of the cafeteria. He runs straight for the door as the guards continue to shoot. Feingold is then shot while standing in line back by the food counter. When Nick is on the roof and Christine is trying to tell him its all fake, he says he saw Feingold get shot. Nick actually never saw this.

Deliberate "mistake": Every time Nicholas enters his gate at home, it it daylight and then when he drives up to the house it is night. Either he has a 300 mile property or there is something else going on. It would appear that it is deliberate as it happens many times in the film. Symbolically, Nick is leaving the world as he appears with wealth and privilege (light) and entering the real van Orton world of solitude and sadness (dark).

Continuity: In the scene at the restaurant where the waitress runs into Michael Douglas' character and they both get wine all over each other, watch her shirt carefully. In one scene, there's lots of wine stained all over. The next, there's not much. Then it goes back to having lots of wine stains.

Plot hole: When Nick confronts the P.I. and yells "Why are you following me?", he looks inside the car and see the file with his picture on the front seat. The P.I. notices this and turns the file over. After Nick grabs his gun, the P.I. jumps out on the other side, raises his hands in the air and tells him somone hired him and runs off. As the P.I. runs off, Nick yells "Who hired you? Who Hired you." as he stands alone next to the car. He then waits a minute and walks off. If he really wanted to know more information, he could have taken the file that was right in front of him on the carseat. It makes no sense that he is desperate for information about the strange events that are going on, sees this file on him, and yet doesn't even pick it up or look at it.

Continuity: At the very end of the movie, Nicholas is talking to Christine. The hair around her ear changes from perfectly combed to messy between front and back shots.

Continuity: When Nick confronts the old man in the hotel after he sees the pictures, he throws them in the old man's lap. Watch the cup and one of the pictures jump around between shots. Sometimes the cup is gone and the picture moves.

Continuity: When Nicholas wakes up in the Mexican graveyard he has a injury on his nose. For the rest of the movie the size and shape of the scar keeps changing from one scene to the next.

Continuity: Check the scene in slow motion when Nicholas picks up his Amex card at the Nikko. At the bottom of the frame you see the card in his hand for a fraction of the second, while it is supposed to lie still on the counter.

Continuity: When Nicholas and Christine run away from the hospital the CRS people send a dog after them through a narrow lane. The stretch the dog has to cover to catch up with them is a lot longer that what they actually run.

Plot hole: At the end, when Nick is on the roof and everyone is behind the metal doors, you hear the saws trying cut through the door and the sparks flying. Immediately when they cut through, the doors swing open and everyone is standing right up front with Champagne glasses. No one is holding any saws or equipment or have any in front of them. Nor was there was any time for the people cutting the doors to run to the back to hide behind everyone else since the sparks fly right up until the doors swing wide open.

Revealing: In the scene where Nick is being followed by the PI, watch the chase car carefully. Several times both seats in the PI's car are occupied yet when Nick confronts him, the PI is alone.

Continuity: When Nicholas waits at the CRS office he is supervised by a hidden camera. In the convex cover of the camera you see a reflection of the whole room but Nicholas, who is standing in the middle of the room, is not visible.

Plot hole: At the final party, Conrad has a fake bloodstain on his back (visible when Nicholas is saying his goodbyes to the businessmen). Earlier, Conrad fell backwards after being shot to lie flat on the ground. Since the event was highly scripted by CRS, it can only be assumed that this pose was intentional and therefore Nicholas would have no way of seeing this special effect, therefore it is pointless. If Nicholas somehow had seen the back bloodstain, he would expect the bullet to have exited Conrad's body and hit someone in the tightly packed group behind him.

Revealing: In the scene where Nick is being followed by the PI, several times Nick's speedometer is seen to be at zero.

Continuity: In Christine's apartment, watch the lamp. In some shots, the entire ring around the shade is smoking, but in others, there is only one tendril.

Factual error: The scene is where Michael Douglas catches up with James Rebhorn at the zoo. The particular shot is where Michael Douglas grabs James Rebhorn, pulls him in close and brandishes his pistol. The mistake is that you hear the sound of the gun being cocked (i.e. the hammer being pulled back), but when the camera actually shows the gun, the hammer is not in the cocked position.

Other: After taking the CRS test, while talking with Feingold, Nicholas corrects his use of "unsatisfied" with "dissatisfied". Feingold responds, "That's right, you're a left-brain word fetishist." But earlier, on the phone with his ex-wife, Nicholas describes her growing family as "nucular". Someone obsessive about word use would never make this mistake, it is classically seen as a sign of low intelligence and/or backward education.

Audio problem: When the ambulance goes to the hospital and the people disappear and he answers, "I'm sorry about that," you can see clearly that his lips don't actually move.