Exclusive: Sean Penn to Star in Action Thriller 'Prone Gunman'

EXCLUSIVE: Sean Penn to Star in Action Thriller 'Prone Gunman'   Follow @THR on Twitter | Like us on Facebook | Send to a Friend  © 2012 The Hollywood Reporter 5700 Wilshire Blvd. Los Angeles, CA 90069 All rights reserved. Terms of Use | Privacy Policy   unsubscribe from this list | update newsletter preferences |