22nd Mar 2012
Continuity mistake: By the helicopter you can see that they are loading the victim on the chopper, and the police officer is inside already. 10 seconds later when CSI Brody is running towards the chopper, the 2 men carrying the victim are now 5-10 feet away from it.
14th Jan 2012
Other mistake: When Harry gets to his vacation spot he is greeted by a dog. A few seconds later the dog is seen lifting his leg to pee, showing his dog is a male. Later on in the film after he returns home after the main killer has killed the second victim, the dog is scratching at the door. If you pause the movie at this moment you notice the dog has a sagging belly with nipples just like a female dog after delivering puppies.