- Dexter doesn't just have killer instincts as a forensic blood spatter expert. He's also murdering bad guys in his spare time as Miami's hometown serial killer! - The Dark Passenger, Dexter's razor sharp sixth sense, is going off the charts as bodies continue to drop in Miami! - Detective Deborah Morgan's murder investigation leads Dexter and her to more questions and suspects. - Dexter can't seem to shake crossing paths with an old high school acquaintance whose past is anything but squeaky clean.