Dexter is a crime drama/thriller TV show about a blood spatter analyst named Dexter Morgan who works for the Miami police department. Dexter secretly kills other murderers who have escaped justice. Each episode is 50 minutes and explores Dexter's character development and how he manipulates his coworkers and friends to hide his secret life. The show aims to leave viewers on edge by sympathizing with Dexter while understanding his compulsion to kill, and examines themes of justice, crime, and morality. It targets audiences 16 and older through its innovative format that captures thriller conventions.