Corrected entry: Dr. Gordon is seen in a close-up to be sawing through his leg, some inches above the ankle joint and the shackle around it. Considering the long bones of the leg (fibula and tibia) are very tough in a young man, it would take a long time to saw through by hand, during which Dr Gordon should have passed out from pain-induced hyperventilation then died from shock.
Corrected entry: Lawrence and Adam don't even think of sawing through the pipe their chains are attached to, yet they try to saw through every place on their chains.
Corrected entry: When we see Amanda unlocking the padlock, if you look at the timer, it has gone past 60 seconds so she should be dead. (00:26:30)
Corrected entry: When Lawrence leans over to get the picture that Adam tossed him, as he leans over, near the door you can see wires and cords belonging to the camera equipment.
Corrected entry: Adam wakes up fully submerged in water, yet he pulls a paper envelope out of his pocket that is completely dry, and without any harm to the tape inside.
Corrected entry: When Dr Lawrance first notices the clock on the wall and tells Adam about it, the time on the clock is around 4 o'clock, but in a later scene after he is told he must "kill Adam by 6 o' clock," the time on the clock is much earlier, around 11-12 o'clock. That much time wouldn't have passed between seeing the clock and finding the tapes.
Corrected entry: When Adam is taking the photo of Lawrence in the parking lot, the first two times we see the scene his camera flash goes off, the shutter snaps, and that's it. However, the the third time we see the scene the flashbulb emit a loud, rising pitch sound as the flash recharges just like it did when he was taking pictures in his apartment before being abducted.
Corrected entry: When Larry notices the clock on the wall, he puts his hand on a pipe. Watch the pipe, it bends in and foams out when he takes his hand off it, revealing it to be made of foam.
Corrected entry: The entire film was written, financed, shot, edited, and released in a span of less than 12 months, a feat unheard of in the modern film industry.
Corrected entry: when Adam is going crazy in the beginning trying to get out of the chains look at his foot its touching the pipe then it is no then it is again.
Corrected entry: When Zep and Detective Tapp are fighting in the bedroom, Zep falls to the floor, well beyond the bed. The next shot, he is right at the foot of the bed, and much closer to Tapp.
Corrected entry: You can see the hole in Adam's shirt (in the scenes after he beats Zep with the toilet lid) where the bullet went through his shoulder, but it's obvious that there's no hole in his shoulder. It's visible when he's grabbing at it. You can see the blood-stained skin, but it's completely smooth, no hole or anything.
Corrected entry: Several times after Dr. Gordon saws his own foot off we see his full body. There is blood around him but never any actually coming from where his foot used to be. In other words, he's not bleeding.
Corrected entry: When Adam throws the photo to the doctor, we see it from Tapp's point of view; from the camera behind the mirror. We see it cut from Adam tossing it to Dr. Gordon catching it, however, there is only one camera recording them. A cut would be impossible.