Rooney Mara joins Aint Them Bodies Saints'Rooney Mara, Ben Foster, and Casey Affleck have signed on to star in Aint Them Bodies Saints' for writer-director David Lowery.

The project is an expansion of his short film, which debuted at Sundance earlier this year. The short follows an 1970s outlaw who escapes from a Texas prison, and sets out in search of his wife and daughter. It isn't clear which roles the actors will portray.

David Lowery will direct from his own screenplay, with James Johnson, Amy Kaufman, and Toby Halbrooks producing. Prodcution is scheduled to take place this summer in Winnipeg, Manitoba, Canada.