Continuity mistake: When Chris, Brad and Sarah are watching TV in the living room you can hear a scene from the movie Halloween but there is something totally different on the TV. Also, as Chris starts to leave later on, there are several shots of the TV and Halloween is now on screen but the scene being shown is the same one that was heard earlier.
Continuity mistake: As the tow truck rolls up to hook up the car, watch the way the four are standing. Daryl is behind Brad by a good foot or so and Chris is just in front of Brad. In the closeup for Chris' line, she and Brad are shoulder to shoulder and Daryl immediately behind them. Cut back to the long shot and they're as before again. (00:22:40)
Continuity mistake: When Sarah is on the top floor of her parents' building (which is under construction), the camera view from behind her shows her holding a mallet by her side, when the camera switches to the front she is holding the mallet in front of her with her elbow bent. (01:21:55)