Continuity mistake: In the scene at the restaurant, when the waitress runs into Michael Douglas and they both get wine all over each other, watch her shirt carefully. In one shot there are many wine stains all over. The next shot, there's not much. Then it goes back to having lots of wine stains. (00:35:40)
Continuity mistake: When Nicholas and Christine are starting to leave her apartment after Nicholas smashes the smoke detector, Christine puts on her coat, then it cuts to the CRS van. When it cuts back to her, she only has the coat on her right arm. (01:20:15)
Continuity mistake: 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. (00:44:05)
Continuity mistake: 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. (00:18:40)
Continuity mistake: 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. (00:45:40)
Continuity mistake: 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. (01:38:05)
Continuity mistake: When 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. (00:58:55 - 00:59:45)
Continuity mistake: 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. (01:52:15)
Continuity mistake: 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. (01:01:05 - 01:02:00)
Continuity mistake: 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. (01:21:15)
Chosen answer: Nicholas' father committed suicide on his 48th birthday, something that has haunted Nicholas ever since. Nicholas himself has now reached the same birthday, putting him in a very sour mood and in no place to receive birthday wishes cordially.
Tailkinker