Plot hole: With how much vodka was seen leaking out of Ms. Lewton's mug from the crack, it would have already been empty or close to empty when she took a drink next to the computer and she would have noticed this and the crack. (00:59:00)
Visible crew/equipment: A green screen is visible in Agent Weine's glasses when talking to Agent Schrek after they let Alex go during Ms. Lewton's death sequence. (00:58:05)
Visible crew/equipment: After Alex walks into Ms. Lewton's home before he discovers her blood on the floor, you can see a crewmembers shadow moving on the light brown TV table. (Note the shadow doesn't match Alex's movements).
Continuity mistake: A reporter takes a photo while Clear and Alex talk at the memorial. When we see the photo in the article, it's at a different angle and Alex has vanished from where he should be next to her.
Continuity mistake: Alex buckles his seatbelt when he first sits down on the plane, before the girls ask him to move, making him have to unbuckle to move for them. When he wakes up after his premonition, he immediately jumps out of the seat, not buckled in.
Suggested correction: Since we don't know exactly when he started dreaming the premonition, it's easy to assume putting on the seat belt was part of the dream.
Plot hole: During the premonition, Carter and Terry are sitting directly next to each other. However, we know that before Carter dies, both Terry and Lewton (who is sitting 2 rows in front of them) have to die first. When Alex sees the report that marks the explosion path, it suggests there is a chain reaction that goes from Tod's seat to Terry's, and then Lewtons. If this is true, should Alex have not died with Tod and Carter with Terry? Tod can actually be seen getting hit in the head with somebodies luggage, and if this is how he died, the news report suggesting a 'chain reaction' is wrong; Tod's seat never explodes. Can anyone tell me if the drawing Alex did with the line going from seat to seat (before the explosion) is not supposed to be an explosion? If you slow down the premonition, both Terry's seat and Lewton's seat blow up about a split-second before the explosion erupts - this is possible but the distance of one of the explosions from Lewton is larger than the explosion from Carter.