Derek Hough Joins Zombie Sneak Attack at Knott's Scary Farm

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Derek Hough got his scare on a little early this Halloween at Knott's Scary Farm, and we have the video!
"What's up Entertainment Tonight!" Derek says in our clip. "We're at Knott's Scary Farm. Come play with us!"
The Dancing With the Stars pro was one of thousands of monsters roaming the theme park for its annual Halloween haunt, but before being let loose on the unsuspecting crowd, he spent a bunch of time in the makeup chair.
Derek was unrecognizable as he jumped out from closed doors to terrify guests, but the biggest screams came when he removed his mask, revealing his true identity.
"My grandma is going to be so jealous!" one guest yelled.
Derek is still riding a high from his perfect score on Monday's DWTS for his rumba with celeb partner Bindi Irwin.
Watch the dynamic duo return to the ballroom Mondays on ABC.