Continuity: The clamps on Jigsaw's head change their positions between the time Lynn says "He's stabilized" and "I need you to raise your hand and spread your fingers" The top one is most noticeable, it goes from hanging over his forehead to lying on top of his head.

Continuity: The blood splatters on Lynn's face change throughout the whole brain surgery scene. The splatters go from defined, to smeared, and then back to defined again a couple different times.

Continuity: Lynn explains the procedure she's going to do to Jigsaw, then goes to fill the syringe. Look at the syringe when she sticks it in the bottle, the plunger part is pushed all the way to the bottom. The shot cuts to a different view and the plunger is a good inch or 2 pulled back already (she hadn't started to draw it out yet, you can see 1 or 2 inches of air). The shot cuts again, and now the plunger is at the top of the syringe again, then she starts drawing it out).

Continuity: The scene goes back to Lynn preparing for Jigsaw's surgery after Jeff rescues the judge. There is a shot of Jigsaw watching Lynn and you can see the hand rotary saw lying on a tray beside him. There are various shots of Lynn getting the equipment ready, and one of them shows her testing the saw and they laying it down on the table with the other instruments. There is another shot of Jigsaw watching Lynn, and you can see that the rotary saw is still on the tray beside him.

Continuity: When Jeff sees the doll on the wrecked trike you can see that the doll's hand is on the trike tire, but in later shots (of the doll from the waist up) the wheel and tire and nowhere to be seen.

Continuity: Jeff's body position moves when he's looking down the hall towards the wrecked trike. When the shot is in front of him his right leg is farther forward than his left and he's leaning forwards peering into the darkness, when the shot is behind him he is standing up straight and his feet are parallel.

Continuity: When Jeff reaches up and plays with his daughter's hair some of her hair falls over/in front of her stuffed animal. The next shot of her (instant cuts) and her hair is back behind the animal.

Continuity: In one shot, when Kerry is in the 'Angel' trap, her right hand is on the chain. The shot cuts away to an over-her-shoulder view and her hand is off the chain. The shot cuts back to show her and her hand is back on the chain.

Continuity: Not only does the key in the acid stop bubbling, then start up again as Kerry's reaching into the jar (as mentioned in a previous mistake), but in almost every shot the key switches from bubbles to no bubbles. It also moves position from the back of the jar to the front of the jar.

Continuity: The first time Kerry's TV shows the view from inside of the closet you can already see one of the bullet holes in the door even though she hasn't even shot yet.

Continuity: After the scene of Tony there is a shot of Kerry and Rigg, the detective is in the background inspecting a piece of the chain. The shot moves to the background detective for a second and he looks up at something. The shot instantly cuts back to Kerry and Rigg and the background detective is suddenly looking down at the chain again.

Continuity: In the close-up shot of Lynn removing the piece of Jigsaw's skull you can see that she's holding the instrument in her left hand (look at the position of her fingers), but in the farther away shots she has it in her right hand. (further evidenced by later in the scene where you see a close-up and she's still holding the instrument in the left hand and a knife is in her right).

Continuity: The positioning of Amanda's green sheet changes drastically during her cutting scene.

Continuity: The red cloth (bag?) that's covering the gun changes its position DRASTICALLY between the first time you see it (then he talks to his daughter when she comes in the room) and then the second time you see it. The first time the back half of it is folded back over itself and it's almost tucked under Jeff's leg. The next time you see it it's completely spread out flat. Jeff didn't rearrange it while he talked to it daughter, it just "magically" happened.

Continuity: When Amanda tells Lynn "Let me give you the simple version" there are several hairs that are across Lynn's face, the next shot of Lynn has her hair back nice and neat.

Continuity: The knot and string position on the tape player is different during the close up of it on "The Rack" guy's chest than it is during the far away shots.

Continuity: While Jeff is contemplating burning his son's possessions his hair constantly changes from messed up and down, to pushed up and away from his face. One of the shots you can see Jeff put his hand to his forehead in agony, so this explains that part of the hair change, but the changes happen several times during the same scene.

Continuity: When the tape player says "The key is among your son's possessions" Jeff is standing in front of the opening between the bars leading down to the ladder, and he takes a few steps towards the incinerator (his left). The screen cuts back to Jeff and you can see in the lower left-hand corner of the screen that Jeff is still standing in front of that opening between the bars.

Continuity: The length of the cut on Jigsaw's neck changes constantly throughout the final scenes.

Continuity: Jigsaw gets "blood" all over the top and sides of the lid of phosphorus paint, yet there is hardly any "blood" on it when he throws it in his bag.