In the reveal by the killer, it shows the killer firing a gun directly at the camera on the ground level. In reality, the killer would have fired up as the victim was on an upper level.
When Jessica, Nancy, and Ben Devlin are riding their bicycles, they pass a sign for Navarro something-or-other that's partially blocked by a tree. Navarro would be found in Mendocino, Calif., the filming location, not in Maine, the setting.