Continuity mistake: In the scene where Annie and her children are getting in the car after church, she is wearing a dress but no sweater. When her friend comes over to tell her about Jessica's disappearance Annie is wearing a sweater over top of the dress. When she is turning to get in the car she is holding the sweater in her hand. Once she is in the car she is wearing the sweater again.
Continuity mistake: When Annie gets hit with the flashlight near the end, blood drips down very close to the crease of her eye. then after her friend saves her in the next scene the blood is farther away.