Actor Joseph McKelheer who played the demon was going so crazy in the car. That he cut his head open. The crew thought it was prop blood, and he told them what happened. But wanted to keep filming.
After Lieutenant Mayberry talks to the press, and walks back into the police station with Dectective Elliot and Gabriella. He is mad at the snotty reporter so he throws a tantrum. This was ad-libbed by actor Evan Parke.