Chris White, who works in IT by day, directs the make up team.

"We basically have about two hours to get 50 to 75 people made up," White said.

The transformation can be stunning. But the actors also employ skill and experience.

"If you ever took choir or singing, you are taught to use your diaphragm and not strain your vocal cords. (In character) You are already dead!," said one man dressed as a zombie.

"You have to put yourself in that mindset - my parents are dead, I probably killed them," said a girl with bloody face makeup.

Actor Tristan Baldwin says his wall-climbing zombie role has helped him land roles in horror movies.

"To develop a character every night actually helps me with my acting career, so I am building up something - 'Hey, I have been a zombie for five years,'" Baldwin said.

But the actors and owner Jim Fetterly have less than two months each year to cash in on Screamworld's seasonal appeal.

"I tell you it is crazy because you base your whole livelihood on what you can make in six weeks," Fetterly said.

But he and his cast are also in this business for the thrill of thrilling others.

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