Visible crew/equipment: When Julie is pointing her gun at Sherry, to her rear in the top right part of the screen there is a black shiny wall panel. On this panel you can see man's reflection, who appears to be wearing headphones. His reflection is in the shot for several seconds.
Continuity mistake: In the scene where Wayne and Fox are in Sherry's house searching for the pill container, right before Sherry asks, "What's going on here?" Wayne is seen wearing latex gloves. The camera then cuts to Sherry. When it cuts back to Wayne, his gloves have magically disappeared.