Continuity mistake: In the very beginning of Saw 2 when the informant awakes and realizes where he is and suddenly gets up from the chair there is a brief shot of him from the rear. If you look closely the leather waistband for the trap is completely loose, but when the camera quickly switches to his front, it shows the leather waist band tight around his waist. (00:01:20)
Continuity mistake: When Matthews' friend is watching the puppet on TV at the beginning of the movie, the channel indicator on the television keeps changing from displaying channel 3 in one shot to being covered up with duct tape in the next. (00:01:50)
Continuity mistake: In the opening scene when the informant is about to cut into his eye they show a close up of the knife just centimeters away from his eye ball. There is minimal blood only in his eye but nowhere else, where in the cut before it the whole area around the eye is covered in blood. (00:03:30)
Continuity mistake: When Mathews and the female agent are talking about the first victim, Mathew's head changes position slightly as the camera cuts back and forth. It is leaning to the right in one shot, then to the left in the next, etc. Very subtle, but it's there. (00:07:00)
Continuity mistake: After seeing the Jigsaw piece cut in the man's body, after Mathews stands up, the position of his body changes slightly between several cuts. He goes from looking downwards, to looking off to the sides, etc. (00:07:50)
Continuity mistake: When Det. Matthews leaves Michael's crime scene, just before Kerry says, "Look closer, Det. Matthews," his tie changes position between shots. Note the position of the knot. (00:08:20)
Continuity mistake: In the office when Detective Matthews and Kerry are arguing, Matthews' gun keeps changing position on the desk with no-one touching it. (00:09:10)
Continuity mistake: The position of Det. Matthews' cigarette in the ashtray changes when he's arguing with Det. Kerry about her being the "Jigsaw expert." (00:09:45)
Continuity mistake: When we see the SWAT team aim their lasers on Jigsaw, we see several dots. A few officers move and 2 remain. However we still see 5 or 6 dots. (00:15:00)
Continuity mistake: In the scene when Eric Mathews goes to confront Jigsaw (after he first looks at the monitors), the chain of his badge gets twisted when he gets held back, but as he's about to leave the chain appears, untwisted. But when he gets back to the monitors, his chain is twisted only to be untwisted by him a few seconds later. (00:16:30)
Continuity mistake: Right after the guy gets shot through the door, it goes back to detective Matthew, and there is a small cut above his right eye. In the next shot it's above his left eye, then back. Meaning the shot is backwards. (00:25:10)
Continuity mistake: Jonas is listening to the tape again. When the door opens, the tape stops playing. But you don't see Jonas stop the tape, and there is more left on the tape as we have heard it before. (00:26:20)
Continuity mistake: When the people spot the envelope with Obi's name on it, the blade of the knife holding the envelope changes angle between shots. It goes from vertical to horizontal. (00:34:15)
Continuity mistake: When we see the envelope with Obi's name on it, the position of the knife through the envelope changes three or four times. At one point it is by the "b" in Obi and in another it's above the "o". (00:34:25)
Continuity mistake: In the part right before the girl is thrown in the heroin needle pit, Jonas takes the envelope with the drug dealers tape. When the cop's son pulls the cover off the pit, you can see that the envelope that Jonas just ripped off is still on. It's right near the bottom of the screen, and in the middle. (00:49:30)
Continuity mistake: When Amanda is thrown into the pit of needles, in some shots there is only one, while in others, there are two or more stuck in her back. Also, in some shots the needles are pointed at an angle, whereas in others, they are pointed almost straight up. (Uncut Edition) (00:51:20)
Continuity mistake: After Amanda falls into the pit of syringes and is dragged out by Eric's son, she is covered in blood from being stabbed with many syringes, but in every scene after that she has no blood stains on her skin or clothes. (00:52:25)
Continuity mistake: The way Kerry is holding the files of the people in the game changes instantly when Matthews grabs the files from her. (00:56:25)
Continuity mistake: Eric sits down after finds out who is in the game with Daniel. When he does, the walkie-talkie on the desk simply disappears between different shots. (00:56:40)
Continuity mistake: When Glenn Plummer gets the spiked baseball bat in the head, the camera shows two shots of the blood coming out of his head on the floor, and there's not much there. When the guy who killed him walks over to read the number on the back of his head, there is now a huge amount of blood, not enough time has passed in the 2 seconds since the previous shot for this to happen. (01:00:00)
