Eccentric star Billy Bob Thornton has signed up to star in new independent movie CHRYSTAL.

The Sling Blade director will star in the film, which will be the feature-directing debut of Ray McKinnon, who won an OSCAR last year (02) for live-action short THE ACCOUNTANT.

McKinnon's wife LISA BLOUNT stars as the title character, whose convict husband (Thornton) returns from prison to find her still bereft from the death of her child years earlier.

Thornton is currently filming The Alamo for Disney.