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Saw IV (2007) Poster

(2007)

Goofs

Jump to: Audio/visual unsynchronised (1)  | Boom mic visible (1)  | Continuity (14)  | Crew or equipment visible (1)  | Factual errors (2)  | Plot holes (2)  | Revealing mistakes (1)  | Spoilers (2)

Audio/visual unsynchronised 

On the Unrated Director's Cut DVD, Rigg pulls the last steel spike out of Morgan and Rex and drops it. However, the accompanying sound is that of a wooden rod landing on the floor.
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Boom mic visible 

During one of the interrogation scenes a boom mic is visible in the reflection of the two way mirror.
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Continuity 

When Officer Daniel Rigg arrives at the shop, the clock shows 1:16. But, at a second look, it's 3:46.
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(at around 1 min) During the beginning autopsy scene, the person performing the autopsy puts his mask on upside down (the eye splash guard is at his neck). As soon as the camera jumps, the face guard is positioned correctly.
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(at around 49 mins) Ivan's pierced eye changes from his left to his right and back to his left when the FBI Agents discover his body.
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During the autopsy at the beginning of the film the assistant weighs Johns' brain. When he removes the brain from the scale and walks away the dial on the scale does not go back to zero.
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(at around 46 mins) During the flashback in which Jill is attacked by Cecil Adams, as she is leaving the clinic, she has to unlock the door at knife-point even though she never re-locks it when retrieving the jacket. The door's lock is a deadbolt type and no knob is present, so it wouldn't lock itself automatically.
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When Agent Peter Strahm and Agent Lindsey Perez find the tape and the puppet in the school building, the tape recorder can be seen running before Agent Perez actually pushes the "play" button.
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(at around 34 mins) When Officer Daniel Rigg enters the hotel room with the box on the bed, there is a photo of his wife on top of it. On the back of the photo, the words "she needed you" are clearly displayed in red ink. However, as he opens the box, you can see the that the back of the photo now reads "she needs you" instead from the letters "eds" at the edge of his hand.
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When Art Blank goes to stop Eric Matthews from jumping off the block of ice the first time, you hear the sound of the gun cocking. In the next view we see the gun and the hammer is not cocked.
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When the scene with Agent Lindsey Perez on her way to the hospital ends, it shows Art Blank sitting at the desk with the timer on 19:47. Later in that scene he walks back over to the desk and the timer is on 19:39 when about a minute of the scene had passed.
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When Rigg finds Jigsaw's last note for him in the desk drawer of the "FEEL WHAT I FEEL" room, it is first seen to have only one sentence: "Become the teacher and save a life." In a subsequent close-up, a second sentence appears: "Go back to where it all began."
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When Art Blank is fighting with Eric Matthews (who tried to jump off the block of ice) his cap is alternately off and on between shots.
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At the end of the camera pan from the hospital room into the interrogation room, Jill's shirt is not fully buttoned as the character had to run from the hospital set into the interrogation set while changing costumes. It is corrected in the next shot.
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When Agent Peter Strahm has his outrage, after he has called Agent Lindsey Perez's mother, the first time he knocks down the papers the computer screen shows "normal use". When they show the knocking over again zoomed in the computer screen shows the Windows welcome screen, then back to "normal use".
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When the crime scene photographer gets accidentally shot by the crossbow in the classroom, the bolt hits the wall next to a red and purple flower. In the next shot, the bolt is at a different angle than before, and is stuck into the wall next to a different, gold and purple flower.
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Crew or equipment visible 

In the interrogation room a camera and a crew member is reflected in the two way mirror mirror. Between 50:44 and 50:45 during 8 picture frames (72998-73006).
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Factual errors 

(at around 3 mins) During the autopsy, when the brain is taken out of the skull, it is not attached to the brain stem and spinal cord; it is loose in the skull. in reality, lots of dissections are needed for it to be done.
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(at around 15 mins) When Officer Daniel Rigg is watching the interrogation video of Jigsaw's ex-wife he is looking at several books and magazines about Jigsaw. The book he picks up is titled "Jigsaw: Is He The Murderer The Police Say He HIS?"
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Plot holes 

(at around 1h 8 mins) In a flashback, John Kramer is shown abducting Cecil Adams at a Chinese street festival celebrating the Year of the Pig. The last two years of the Pig were in 1995-1996 and 2007-2008. This does not match Jill's statement that these events took place shortly after John's diagnosis with cancer in 2003.
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Officer Daniel Riggs tries to free Brenda by shooting the motor. Yet it never occurs to him that with her hair wound tightly into a ponytail all he had to do in order to free her was put the muzzle of his pistol right onto the ponytail and pull the trigger, the bullet would rip through her hair and she would be free.
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Revealing mistakes 

(at around 54 mins) When Rigg approaches the door to the classroom, in which the husband and wife have experienced their trap, the painted red '?' on the door is still wet.
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Spoilers

The goof items below may give away important plot points.

Incorrectly regarded as goofs 

At the end of Saw III, when John died, he has no facial growth, and during his autopsy, stubble is clearly visible. Despite it being commonly believed that a person's hair can grow after death, it cannot. However a corpse's skin can recede allowing hair under the skin which grew during life to become visible.
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Plot holes 

(at around 1h 18 mins) Art Blank's second trap was the Spine Pincer, which was intended to slice through the back of his neck if he failed his test, but when he takes off his jacket (revealing the device) he bends his head and clearly shows that he can get his spine out of reach of the blades. The pincers have no extension, so Art really has no obligation and no reason to subject Eric Matthews and Mark Hoffman to their torture.
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See also

Trivia | Crazy Credits | Quotes | Alternate Versions | Connections | Soundtracks

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