Visible crew/equipment: When Helen is being chased by Ben, she runs to "Shivers" and up to the glass door, screaming "Elsa!" In this shot you can see a crewmember reflected in the glass door.
Visible crew/equipment: When Julie comes home at her mother's house, she looks at her diplomas on the wall. When her mother comes in the room, you can see a reflection of a boom mike in the frame behind Julie. (00:27:10)
Plot hole: Barry gets killed violently at the pageant. So obviously there should be blood everywhere. When the police go up to the crime scene, they find nothing. There's no way the killer had time to clean up anything, let alone drag away Barry's body without someone seeing him. And blood starts dripping after the police leave the scene.
Ben Willis: You in some kind of trouble child?
Julie: Yes, yeah I'm in a lot of trouble.
Ben Willis: That's a shame, being that it's the 4th of July and all. Kids like you should be out having fun. Drinking, partying, running people over, getting away with murder... things like that.