Continuity: When Kerry is talking to Rigg and the detective she is almost directly in front of the door. When the other girl says "You won't believe this, we got the tape out clean" the camera pans around and you can see that Kerry is now in front of the chalk boards.

Continuity: During Jigsaw's seizure, Lynn runs over to the shelves that have all the bottles of pills and starts looking for a certain type of pill. The first time you see the shelves all of the bottles are knocked over and strewn around. The shot cuts to Amanda holding Jigsaw down, then back to Lynn looking for pills. For some reason most of the pill bottles have now magically been put upright and look fairly organized.

Continuity: When Kerry is sneaking up to the door, you can see on the TV that she raises her gun up to her chest, but then the shot cuts away (instant cut) and she's still aiming the gun at the closet.

Continuity: A little bit after you first see Jeff there is a shot of Amanda looking into Jigsaw's room. Lynn is telling Jigsaw to look at her. The pillow is about three-quarters of the way down Jigsaw's head, almost down to his neck. The shot cuts to a closer view of him and now the pillow in a good 8-10 inches higher on his head, up past his ears.

Continuity: The blood stains (streams) on Jigsaw's chest constantly change after Jeff slices his neck. Sometimes the only blood stain is a trail that goes directly down the side of his hospital gown, other times it's halfway down his chest. The shots constantly go back and forth, so it's not just the blood flowing down his chest.

Continuity: When Lynn first gets rolled into Jigsaw's room she has a few strands of her hair in the corner of her mouth. The strands appear and disappear during the next few shots.

Continuity: When Jigsaw is coughing up blood, the blood in the mask disappears between shots.

Continuity: In the "Twisting Crucifix" device scene the tear on the man's face jumps from his right eye, to his left, then disappears, then reappears again throughout the shots.

Revealing: When Lynn is inspecting the "reverse bear trap", the trap Amanda was placed in for the first movie, you can see a small orange light reflecting off a few surfaces, like Lynn's arm and the nearby table. This is the brightness level auto-adjustment light that is present on many handheld cameras, which the cameraman apparently forgot to cover or turn off.

Revealing: It's obviously a fake head when the doctor is drilling the skull as indicated by the increased amount of hair as compared to facial shots of Jigsaw.

Continuity: When Eric slams Amanda to the wall she eventually starts bleeding profusely. But you can see that there are no blood spatters on the wall even when he continually tries to do this a few more times after that.

Continuity: The blood mark on Kerry's cheek changes several times. It's most easily noticeable when you first see her in the 'Angel' trap, and then a close up on her face at the 14:17 mark in the movie.

Revealing: Jeff tears a big chunk out of his face, but it never really bleeds out very much. It's pretty obvious that it's not just a layer of skin, you can see that there's a pretty big hunk of skin gone. At one point in the movie it's completely covered in blood, but only inside of the area of the tear. It should, at the very least, ooze quite a lot and drip something down his face, yet the area around the wound is always free from blood.