Orphaned at age three, when he witnessed his mother's brutal murder with a chainsaw, Dexter (Michael C. Hall) was adopted by Miami police officer Harry Morgan (James Remar). Recognizing the boy's trauma and the subsequent development of his sociopathic tendencies, Harry trained Dexter to channel his gruesome bloodlust into vigilantism, killing only heinous criminals who slip through the criminal justice system. To cover his prolific trail of homicides, Dexter gains employment as a forensic analyst, specializing in bloodstain pattern analysis, with the Miami Metro Police Department. Dexter is extremely cautious and circumspect; he wears gloves and uses plastic-wrapped "kill rooms", carves up the corpses, and disposes of them in the Atlantic Ocean's Gulf Stream to reduce his chances of detection. Dexter juggles his two personas, recognizing each as a distinct part of himself that must cohesively work as one. He depends on their interaction as a means of survival and normality. Although his homicidal tendencies are deeply unyielding, as he originally claims (via narration), throughout the series he strives to feel (and in some cases does feel) normal emotions and maintains his appearance as a socially responsible human being.