The police arrive and arrest Charlotte at the party. When the homeowner returns, she finds a record of a citizen's arrest, despite the arrest being made by police.
In an early party scene, Charlotte is clearly seen slipping through the front door unnoticed when the police arrive. However, later, it is revealed she is in custody in the police station with no explanation as to when she was caught.
The new paint brushes Elise steals from the art supplies store are clearly already soiled/used when she pockets them.
At one point, at the police station, a police officer's badge is clearly visible. Most badges are covered with black tape, but this one says San Francisco, despite the film taking place in the fictional town of Raybourough, in Southern California.
In an early scene, the students are exiting their class and a bare-footed extra is clearly seen wearing a Petaluma High sweater. Despite the film being shot in Petaluma, it takes place in the fictional town of Raybourough.