Constantine is an American television series developed by Daniel Cerone and David S. Goyer for NBC, featuring the DC Comicscharacter John Constantine. Matt Ryan stars as Constantine, a British exorcist and occult detective who actively hunts supernatural entities. The series aired from October 24, 2014 to February 13, 2015, over 13 episodes. On May 8, 2015, NBC canceled Constantineafter only one season due to poor ratings. Ryan reprised the role in a guest appearance in the fourth season of The CW series Arrow, set within the Arrowverse, and it was announced in January 2017 that he would voice the character in an animated web series on The CW Seed later that year.