Revealing: When Frank is trying to stab that girl, his switchblade is obviously fake because there is a line on it that the dagger will go into when he hits her with it.

Visible crew/equipment: When Ashley is running down the corridors before escaping back into her medical room, you can see the dolly that The Engineer chasing her is being pushed on.

Continuity: Right at the beginning when Frank is with the dealer at a table, a green glass of tea appears/disappears randomly through shots, and they also change position, as does the cenobite box.

Continuity: The amount of blood on Julia's face, neck and clothes changes from when she's inside the attic to when she goes out onto the landing, and then from when she then goes into the bathroom to wash herself clean.

Continuity: When Kirsty accidentally opens the box while in the hospital, the face with the large diamond design on it is initially on top, then when it cuts to a close up, the box somehow flips 90 degrees so the face with the circle on it is on top.

Revealing: When Kirsty encounters the 'skinless' Frank, he says to her 'It's Uncle Frank' and you can see his left hand is normal and flesh covered, even though Frank is supposed to still be missing all the skin from his body.

Continuity: Throughout most of the film, Larry has a bandage on his right hand. When he talks to Julia through the bathroom door, Larry's bandage is on his left hand.