Continuity mistake: In the scene where Dr. Champion first meets with Angela in the hotel room, he tosses some folded clothes to her. In the shot where the clothes leave his hands, they are beginning to flip over forward, but when the camera switches to Angela catching them, they land perfectly upright.Jon Nicholas
Continuity mistake: When Angela is confirming her online vacation reservation, the screen shows her Seat Assignment: 8B. Yet a moment later, after she confirms the screen's 8B, it becomes confirmed as 8A. (00:10:50)
Continuity mistake: In the scene where Angela trips the fire alarm at Cathedral, and the fake Angela is being prompted to leave the cubicle by some other guy, and she storms out, watch when they switch shots to Angela hiding behind the wall. In the background, you can see the other two in the cubicle repeating the same actions.
Continuity mistake: After Dr. Champion dies in hospital, Angela pushes the nurse's computer monitor, smashing it on the ground. As she grabs it to throw it down, the front fascia pops off, showing it's just a prop. As well, from the angle we can see the screen, it's black (since it's not really on.). (01:15:15)
Continuity mistake: When Angela arrives at the Cathedral offices, the elevator she gets off shows "20" on the frame, for the 20th floor, but all other activity references the office being on the 5th floor.
Continuity mistake: In the scene before a police car starts chasing Angela Bennett's car, Highway Patrol is checking her license plate number 3POW893 - reported stolen. But in the very next scene where Angela's BMW is falling from a hill, we can see that the license number of the car is 3POW827. (01:14:55 - 01:15:30)
Continuity mistake: When Dale's plane crashes into the storage silos, we see the cockpit completely explode, yet the next frames show a closeup of Dale just before he hits them. (00:15:30)
Continuity mistake: When Angela hits Jack with the fire extinguisher the second time, we see it going over the railing with him, but in the next shot of Jack falling it is nowhere to be seen. In the next overhead shot the extinguisher is already on the ground near where Jack is going to land. (01:43:30)
Continuity mistake: Just before the guy crashes the plane into the towers, he reports his height as 1,300 feet. There is an almost instant look at the console in front of him and you can see the altimeter is saying he's at 700 feet. Whatever the hackers can change (they seem to change his GPS system reading) they cannot change this which relies on sensors mounted in the plane itself.David Mercier
Continuity mistake: The "Ruth Marx" signature on the photocopy is different than the one Angela signed in Mexico.