Dexter American crime drama series where you are rooting for the killer?? The show aired in 2006 and stayed famous and popular until 2013, as Dexter Morgan, played by Michael C. Hall, took his skills as a forensic technician specializing in bloodstain patterns leads a double life as a vigilante serial killer. 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 drew 2.8 million viewers, the largest overall audience in Showtime's history. Here is a signed poster by Michael C. Hall as Dexter, framed with a commemorative iconic weapon!