Continuity mistake: When Hoffman is walking towards Jill in the jail, the button down shoulder epaulette on his jacket is undone in one shot but done up in another. (01:11:50)
Continuity mistake: When Jill is hiding from Hoffman, the blood mark on her face changes size, shape and colour instantly. (01:13:40)
Continuity mistake: When Hoffman is killing the second coroner his facial expression changes completely in an instant. (01:08:05)
Continuity mistake: When Gibson is watching Hoffman's first DVD, the position of the headphones over the monitor changes between shots. (00:36:45)
Continuity mistake: When Jill notices the trike, the position of the pedals on the bike changes between camera angles. (00:16:40)
Continuity mistake: In Saw, Dr. Gordon's trousers are almost white with dirt. However at the start of this film, his trousers are nowhere near as dirty as at the end of Saw. (00:00:30)
Continuity mistake: The amount of nut shells on the bar when Bobby gets his idea changes between shots. (00:32:40)
Continuity mistake: At the Garage trap, the man on the door can be seen to be split in two. However when we see all the homicide cops looking at the scene, he is all in one, albeit a bad one, part. (00:27:20)
Continuity mistake: When Dr. Gordon cuts his leg off in the first Saw film and leaves the bathroom, he leaves a big trail of blood. But in every movie after that you never see any type of blood trail at all.
Continuity mistake: Towards the end of the movie when Dr.Gordon throws the saw out of the bathroom into the hallway and it lands, the next time you see it, it has turned just a bit from when it landed. (01:21:00)
Continuity mistake: During the time in which the wife had walked out of the Police Station,she approaches the tri-cycle, during the change of angles there are tire tracks & foot prints, in another angle there are none, the snow is smooth. (00:16:20)
Continuity mistake: When Nina dies, Bobby has her blood all over his face. When he picks his book up a few seconds later the blood is gone. (00:41:00)
Continuity mistake: When Billy the Puppet says "Hello Brad" Brad looks at the puppet, in the next shot, you can see he has his head below the blade, not looking at the puppet. (00:03:50)
Continuity mistake: At the end of Saw VI, Hoffman has got a massive chunk of cheek missing from the reverse bear trap. However in this film, which continues from Saw VI, he has not got a chunk missing. (00:09:00)
Continuity mistake: As Evan is tearing himself away from the car seat, you can see his back muscles are a fleshy-color and only have a little bit of blood on them. When he crashes at the end of the scene, his back muscles are suddenly dark-red and saturated with blood, despite looking totally different just seconds before. (00:20:25)
Answer: Dr. Gordon from the 1st movie, and Ryan and Brad from the trap in the beginning of this movie.
derrick g