PORTLAND, Maine (NEWS CENTER) -- More than a hundred dancers gathered in Portland's Congress Square Park for a Thriller flash mob on Thursday.
While the seemingly-impromptu event seems like all fun and games, it takes a month of preparation.
"My dad did a lot of make up for us. Halloween was one of our favorite holidays and we would get an extensive make up kit and ultimately we were the subjects of the make up, but eventually it became fun to do it." Reggie Groff has spent his life training for this; turning dancers into zombies in a bar around the corner.
"Zombies are fun," Groff said. "They're easy, they're grotesque. It’s really hard to go wrong."
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