The next day, Charles becomes convinced his son is responsible for the deaths. When Christine tells him that Andy is on a double date with his high school sweetheart, Joanne, his sister and his best friend, Charles gets his gun and goes looking for them. At a drive-in cinema, Andy visibly decays due to lack of blood. He attacks and kills Joanne and his friend while his sister manages to escape. The other patrons witness the attack. Andy flees before he can inject his victims' blood, running over and killing one of the patrons.