Continuity mistake: When Dahmer gets upset and tries to tackle the wrestler, he is thrown on his back and grabs the guys shirt. The shots after that switch between holding the shirt and not holding the shirt.
Continuity mistake: In the scene where Trish gets shot in the head by Vic, she falls backwards onto a bed and lands inbetween two duffel bags. When Jack looks over to her, the camera shows her again, and the bag that was at her right is no longer there.
Continuity mistake: When sitting around the table with her friends, the book Katie is holding changes between shots.
Continuity mistake: John's shoes change from the time he gets out of his car the first time at Gordon's house to when he's inside the house in the bathtub.
Continuity mistake: Antonio Banderas looks at his watch and the time is increasing, but a minute later he looks and the time is counting down. (01:07:40 - 01:08:40)
Continuity mistake: There's already drops of blood on the floor and Carrie's hair is already wet before the blood hits her.