Based upon the successful Jeff Lindsay novel "Darkly Dreaming Dexter", Showtime's and FX's "Dexter" continues to raise the bar on television drama, as it chronicles the grisly exploits of a police blood spatter expert who moonlights as a serial killer (or vice versa). Unlike other serial killers, however, Dexter only kills the bad guys, a distinction that sets up one of the primary ethical conflicts of the show, for Dexter as well as for the viewer...