Drag Me To Hell (2009) - 6 mistakes

Continuity: A spirit knocks Christine over and gives her a bloody lip. Her boyfriend tends to her lip, which is very swollen. As she sleeps, there is a close up of a fly going into her mouth between her lips that are not swollen at all. After she swallows the fly, she sits up and her bottom lip is swollen again.

Factual error: Rham attempts to give CPR to Shaun San Dena after the encounter with the Lamia. He uses completely wrong hand positioning, would more likely break her collarbone than stimulate her heart, and does the CPR for all of about 10 seconds, which would be useless. There's evidence his character was trained in CPR, as he listens for breath and watches for chest rising properly, so it is not likely he was just making it up as he went along. A person trained in CPR would at least put their hands in the right place. He was not just a couple of inches off, but not even close to where the hands should be placed. Also, CPR must be done continuously until medical aid arrives, not for 10 seconds.

Continuity: During the seance, the white goat disappears for one shot (from high above the table) and then reappears.

Continuity: In the scene where Christine is at the women's house at the end of the film, she is sitting at the table with the women and two guys and the goat. The creature is entering the scene and it's very loud. Christine in holding her ears. The next shot, her hands are down and she's looking at the door. In the next shot, she is holding her ears again.

Audio problem: In the first scene when Christine is driving her car, she has the blowers on max speed yet there is no sound from the fans whatsoever.

Other: When Christine fixes Clay's printer, there's just one small problem. Clay has two iMacs in his office, seemingly connected to an old HP DeskJet printer with a parallel interface. New iMacs do not have parallel ports, so Christine only solved one of Clay's problems. "Hi, I'm a Mac and I don't know anything about computers". Massive fail.