NBC has released the first official trailer for it’s new upcoming TV series Constantine. The show is based on the DC comic book series Hellblazer. Matt Ryan of Criminal Minds stars in the lead as John Constantine, a demon hunter. If you’re only experience with John Constantine has been the 2005 Keanu Reeves movie Constantine, don’t let that keep you away. This show looks like it will be closer to what the comic books are, and will be a better representation of the character.