Dexter and Philosophy: Mind over Spatter

What explains the huge popular following for Dexter, currently the most-watched show on cable, which sympathetically depicts a serial killer driven by a cruel compulsion to brutally slay one victim after another?
Although Dexter Morgan kills only killers, he is not a vigilante animated by a sense of justice but a charming psychopath animated by a lust to kill, ritualistically and bloodily. However his gory appetite is controlled by “Harry’s Code,” which limits his victims to those who have ...