Continuity mistake: The way Daniel holds the picture of him and his dad changes instantly. (01:01:25)
Continuity mistake: After Xavier kills Jonas with the spiked baseball bat, we see Amanda, Daniel, Addison and Laura in a hallway. Laura collapses to the ground due to the nerve gas that they've all been inhaling. Between shots her left arm moves from her stomach to across her right shoulder. (01:02:00)
Continuity mistake: The tape on the picture that Daniel has keeps changing. In some shots it's all nice and neat; in others it's curled up and taped to itself. (01:02:30)
Continuity mistake: When Emmanuelle Vaugier walks into the room with the clear box trap hanging from the ceiling, in the middle of the two hand openings is a syringe with the antidote. It is filled with significantly more in the close up shots, than there is in the full shots which show a lot less in the syringe. (01:06:00)
Continuity mistake: Right at the end, the amount of blood and cuts on Jigsaw's face changes when he is in the van with Det. Matthews. (01:10:30)
Continuity mistake: When Amanda and Daniel entered the bathroom from 'Saw', Adam's body is shown with his right leg shackled. However, in 'Saw' and in Adam's death flashback in 'Saw III', his left leg is shackled. (01:14:10)
Continuity mistake: After Xavier's had his throat cut, he grabs Daniel's shirt and his hand is completely covered in blood. The camera cuts away and then cuts back, and suddenly his hand is bone dry. (01:15:30)
Continuity mistake: We figure out at some point or another in the movie that the people in the game are supposed to have numbers on their necks. (In the back of their minds). But in the scene where Amanda gets thrown in the needle pit Franky G's neck is seen as he walks past Glenn P. and as he walks out the door, with no numbers in either shot.
Continuity mistake: At the end when Det Mathews is in the same room as Saw 1, you can see the mirrors on the wall. Both are intact, when one of them was broken by Daniel in the first movie.
Answer: Daniel was in there the whole time...The events in the house took place MUCH earlier than when the police got there. Everything in the house was on a tape delay.
moviemogul