If you haven't seen the pilot for the show Rubicon you might want to give it a try. It is done by the same people that did The Sapranos. I watched it the other night and there is a lot of puzzles (pun intended) that looks like they will evolve in this series. The show is on AMC and I think it starts in July about the same time that Mad Men starts up again. The story evolves around a group who's function is to break codes, as in A Beautiful Mind. The main character is played by a young man who was also featured in The Pacific. I really enjoyed the sneak preview and think it has a lot of promise.