Continuity mistake: Just before Jessica goes and asks the woman with the pram if she'd like some lemonade, we see Nicki put the plastic cups down beside the 'Cash' box. In the next shot of Jessica talking to the woman, the cups are on the other side of the table. They're back in their original place in the next shot.
Deliberate mistake: Right before rising to check out who was calling her name, Hannah sets her laptop, which she was using to write a letter, on the bedspread. The computer screen is shown to be blank, meaning, 1. she switched it off, which she didn't, or 2. it was out of order, which doesn't make sense since she was using it seconds before. (00:02:10)
Continuity mistake: When the security guard enters the room where Brian had hacked the computer, he's out of sight, having hidden in the vent above the room. But he was sitting in the chair just moments before as the guard was opening the door. He couldn't possibly have made it up there in time.Knever
Continuity mistake: In the scene where Hannah Fairchild enters Danny Anderson's house, in the close-up shot of her on the front steps before she enters, a huge gust of wind blows and messes up her hair, but in the close-up shot of her entering through the front door, her hair is visibly straight again. (00:15:25 - 00:27:30)