Continuity mistake: Kelly is talking with Mrs. Brendleberry, when all of a sudden everything starts to move. In the room there is a chandelier, which is shaking. However, if we watch the mirror, we will notice that the chandelier is still. (00:26:00)
During the scene in the Sheriff's car, after the Angels choke the Sheriff and Deputy, they lose control of the car. It goes off the road and a ramp is seen, hidden by some trees, that the car goes off to end up in the swamp.