Susan Sarandon and Jonathan Tucker are joining the cast of the mystery thriller, In the Valley of Elah for Warner Independent Pictures.

The film, written and produced by Paul Haggis, is based on a Mark Boal Playboy article. It already stars Tommy Lee Jones and Charlize Theron; The Hollywood Reporter notes it follows a veteran father (Jones) in search of his son, an exemplary soldier who recently returned from Iraq and has mysteriously gone AWOL. Sarandon will play Jones' wife; Tucker plays the son.

Shooting on In the Valley of Elah is scheduled to take place this month in New Mexico and Morocco.