Continuity mistake: In the scene where Mom and Dad are in bed and there is a loud knocking on the front door, if you look through the window behind the bed, you can see daylight and what looks like a parking lot. When the father is walking down the stairs, the light from outside is blasting through a stained glass window. Then when he goes to the front door, it is pitch black outside. He then turns on the porch light and the bulb burns out. At the end of the scene, they show the entire front of the house, and the porch light is on.