 The season-eight premiere was the most watched "Dexter" episode with more than 3 million viewers total for all airings that night.The original broadcast of the series finale—shown at 9 pm on September 22, 2013—drew 2.8 million viewers, the largest overall audience in Showtime's history.Orphaned at age three, when his mother was brutally murdered with a chainsaw by drug dealers, Dexter (Hall) was adopted by Miami police officer Harry Morgan (James Remar).