Be on the lookout for movie stars in downtown Cartersville.

Filming of scenes for Devil's Knot, a movie set for release in 2013 and starring Reese Witherspoon and Colin Firth, began yesterday in the gold-domed, 1903 courthouse, On Location Vacations reports.

The movie is based on Mara Leveritt's book, The True Story of the West Memphis Three, who were three teens charged and convicted in the 1993 murders of thee 8-year-old boys.

Devil's Knot tells the story of a private eye who worked pro bono on the murder investigation, according to Cinema Blend.

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