Continuity mistake: During Donnie's murder trial, the defense lawyer talks about the death of Annie's husband. He says her husband was killed in an explosion at work in April. However, at the end of the movie, Annie and the kids visit the husband's grave and it lists his date of death as November.
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: At one point in the courtroom scene, the lawyer puts a dollar bill on the stand, then it cuts away and it's gone. A few seconds later and its back again.
Continuity mistake: At one point, the woman goes into her son's room and picks a book up. Then it cuts to a different angle as she walks out and she doesn't have it any more.
Continuity mistake: At the beginning of the film Cate Blanchet's hair is swept to the right with a barette. The camera focuses on something else, and when it comes back to her her hair and barrette are on the left side of her head.