Smart. Loving. He's Dexter Morgan, America's favorite serial killer, who spends his days solving crimes and his nights committing them. In season 8, Angel Batista wasn't always played by David Zayas. The son of David Zayas Jr., he replaces his father in some photos because the two look so much alike. A large scar can be seen on Dexter's left side in the first season. Later in the second season, the scar moved to his right side, leaving his left side unmarked. Dexter Morgan: I've lived in the dark for a long time. Over the years, my eyes have adjusted until the darkness became my world and I've seen... Appeared at the 64th Annual Golden Globe Awards (2007). Main Theme Written by: Rolfe Kent Performed by: Rolfe Kent. Dexter is without a doubt one of the best shows ever made! It follows Dexter Morgan (Michael C. Hall), the Miami PD's blood spatter expert, as he solves and commits crimes. He only kills bad guys who are on the run from the law. Being a blood spatter expert, he is able to outsmart the police at every turn. This is a thrilling, unique TV show that will keep you on the edge of your seat throughout the series. Michael C. Hall is perfect as Dexter, and the rest of the supporting cast is just as great! Yes, the ending was terrible, but just like Game of Thrones, Lost (or any other show with a bad final episode), a few bad episodes at the end don't detract from how great it was overall, and that's what Dexter is... A GREAT show.