Dexter (2006 - 2013)

"Dexter" is a multi-series crime drama produced by the cable channel Showtime. The series is based on the eponymous bestseller. The plot revolves around Dexter Morgan, a forensic expert who tries to control his inner urge to kill. In his childhood, he experienced a brutal tragedy that deeply affected his psyche. He was later adopted by a police officer who immediately sensed the "dark essence" within the boy. He then offered Dexter a specific code of conduct that would help him channel his murderous desires towards bad guys.