Viola Davis, nominated for an Oscar for her role in Doubt, has joined the cast of the Jamie Foxx, Gerard Butler thriller Law Abiding Citizen. There’s no information about the role she’s playing.

Davis has an acting career spanning over a dozen years. She’s was in 2008′s  Nights in Rodanthe, Disturbia as well as “Law and Order” and a variety of television series and films. In Doubt she plays the mother of the young boy suspected of being abused by a priest.

Law Abiding Citizen started shooting on January 21 in Philadelphia. Gerard Butler plays a man who seeks revenge against the assistant district attorney, Jamie Foxx, who allowed the murderers of Butler’s family to cut a plea agreement. The film also features Colm Meany and Leslie Bibb.

LAC is being produced by Butler for the Film Department along with Mark Gill, Lucas Foster, Alan Siegel and Kurt Wimmer. Neil Sacker, Robert Katz and Michael Gouguen are the executive producers with Jeff Waxmen co-producing.

F. Gary Gray, The Italian Job, is directing with a screenplay by Kurt Wimmer.

Law Abiding Citizen is scheduled for release in 2010.