“Killing Joan” (* out of four) was a grindingly inept death-wish revenge thriller that does nothing but kill your time about a mob enforcer (Jamie Bernadette) who is double-crossed and left for dead and then enacts her revenge against the mob and those who betrayed her. Slapdash filmmaking and awful acting make this a chore to sit through and it goes on forever at nearly two hours. Strictly recommended for anyone who thought the recent “Death Wish” remake with Bruce Willis was not well-done.