In part 3, Denis and Mac are in the gas station and they see a crazed man come out the boys bathroom. They also meet a little boy named
Jerimiah. They go back to their town and find Anna. They see Anna running out the house when they see a zombie after her. They see a purple scratch on Annas leg like the crazed man at the gas station.
In part 4, they drive to a campsite far away from the town. Mac cleans up Annas wound and Anna thinks shes gonna turn into a zombie. Annas wound got darker and she soon disapeared.