It doesn’t take a genius to see the writing on the wall. With an audience dwindling by the week, the best Life On Mars fans can realistically hope for is that the series will air all of its episodes and come to some sort of satisfying conclusion. This episode seemed to move in that direction, at least a little bit. Here, a councilman is picked up, but he, like Sam, has come from the future: 2009 to be exact. But before Sam can learn much, the man is shot, in the middle of the precinct no less, and in his dying breath, reveals that he was killed because he found the way home. After that, the procedural elements kick in as everyone tries to identify the shooter. This part of the episode is a bit overly simplistic. It was obvious who the shooter was, and it didn’t take a Mensa scholar to realize …