Dexter is a Psychopath who has a Tragedy in his past which turns him into a Serial Killer. He works as a Blood Spatter Analyst for Miami Metro Ploice Department and is very good at solving crimes. Has a obcession with Killing other Murderers. He has a way with not getting caught by following certain code which his Foster father Harry taught. First he Stalks the victim ( Murderer ) and confirms the validity of his crimes and then only goes for him. Follows a strict code and leads a deciplined life. Makes mistakes and learns from them. No wonder its a sucessful TV series. Michel C Hall has performed tremdously true to his charecter.