Dexter is an American TV series that surrounds with the life of a serial killer that kills serial killer. It focuses with Dexter Morgan, a blood pattern analyst for the Miami Metro Police Department (MMPD) who became a serial killer after witnessing the death of his mother. However, he was trained by the person that took him after the incident and developed a certain "code" in killing, that is killing the person that deserves to die - which are usually serial killers or criminals . He tried to live normally by marrying somebody but continue with his killing spree according to the code.