Corrected entry: In the scene where Lester (the cop) comes back to the shed where he's staying with Kathy, he's obviously just come back from work and leaves right after that to go to see his wife and kids. Then when Kathy goes into her trunk, she finds his police belt and gun. Why did he put his equipment in her trunk? They have no contact with each other between these two scenes, so he couldn't have given these things to her.
Corrected entry: The house in which the action takes place has only one floor; when Ben Kingsley goes to his bedroom from the front door he walks straight to it. But in one scene, when he and his wife go to their bedroom to make love, they go via stairs and a landing, neither of which have appeared in the film before, nor do they appear again.
Corrected entry: In the scene where the officer is holding the family in the bathroom, he puts a chair against the outside of the door to secure it. This is useless because the bathroom door opens in, not out.