By Mandi Bierly
Updated January 30, 2009 at 06:00 PM EST

Someone was listening to Meryl Streep’s acceptance speech at the SAG Awards, when she told somebody to give her Doubt costar and fellow Oscar nominee Viola Davis a movie. Davis has joined the cast of Law Abiding Citizen, now shooting in Philadelphia, Variety reports. Jamie Foxx and Gerard Butler star in the film, which is said to center on a man seeking justice from the assistant district attorney who prosecuted (we’re guessing, poorly) the killers of his murdered wife and daughter years earlier.