Continuity mistake: Snow, Emilie, and Mace are hiding from the inmates and Alex walks by. Mace yells out "Porn horn" and both Snow and Emilie quickly slap their hands over Mace's mouth. The very next shot, suddenly it's just Snow's hand over his mouth, and Emilie is in a different position. (01:01:30)
Continuity mistake: When Snow is talking to the Henry Shaw in the interrogation room, he is given a cigarette and lighter. Snow lights the cig, and then lowers both arms onto the table as he puffs. The next shot cuts to Langral's perspective looking through the window. Now Snow's right arm is up holding the cigarette. (00:08:05)
Continuity mistake: Hydell (the crazy brother) locks The Warden in the airlock. He begins to write "BI BI" in the condensation on the glass. The positioning of the letter 'I' in the first "BI" changes as the camera switches inside the airlock. It is now touching the first letter 'B'. Also the second letter 'B' is now much neater. (00:29:45)
Continuity mistake: In the scene after climbing out of the sealed room, the light on Guy Pearce's shoulder changes from the left to the right and back again.
Continuity mistake: Henry comes in the interrogation room and has Rupert remove Snow's handcuffs. Snow then just looks up at Rupert and puts his arms down as Rupert begins to walk away. The next shot from a distance, Rupert is still in the process of backing up, but now Snow is suddenly looking at Henry and Langral. (00:07:50)
Continuity mistake: Snow and Emilie find the inmates used in experiments. Then Alex and a couple of others get the jump on them and they have a fight. Snow grabs his gun and gets shot at, and falls down the elevator shaft. He lands and is knocked out, with his left arm draped over himself across his chest as he lies partly on his side. The next time he is shown moments later, he is now flat on his back with both arms at his sides. (01:11:35)
