Here is a good piece about the way this plot device is creeping into a lot of TV shows, someone pulling all the strings behind the scene with all the other characters being dupes or fools.I think almost every season of DEXTER has featured a mastermind serial killer.
I really dislike this denouement to an arc. I dislike it in movie as well--where it is used repeatedly in Bond movies, Star Trek movies, and almost any Superhero film. These superhuman villains can outhink anyone--until, of course, they can't because the audience won't allow a show or movie to end like this.So no matter how clever, you know they are going down.
What do you think? Is a mastermind interesting to you? Like serial killers, have they run their course.