Isn't there a movie that is specifically about Legion? Can't remember the name of the movie. It's about this one cop that investigates a series of serial killers that seem to kill with the same methods. Specifically, there is one that is executed for all the murders. Right before he was fried, his face turned from this mean killer to an innocent looking man wondering what the hell happened and why the hell was he being fried. The cop eventually finds out that there is a demon jumping from one person to the next making them do stuff.
Place yourself on the map at http://www.frappr.com/evc
The thread about this map can be found here.