Now, Robert Nathan, a veteran show runner on NBC’s Law and Order, has been tapped to come on board for at least the last four episodes this season and try to gently retool the show enough to get a ratings bump and secure a season renewal. Word is, if the network hadn’t found a show runner, the drama was doomed to see its sets struck, right down to the bathroom fixtures, and grind toward slow, painfel non-renewal death. At least now, it has a shot.