The show is in development at the Nbc network and will follow the adventures of the conman-turned-supernatural detective, who is forced to protect the world from evil, according to Deadline.
Keanu Reeves played the title role in 2005 movie 'Constantine'.
The DC Comics character is also rumoured to be appearing in a planned 'Justice League' film, which executives at Warner Bros have in the works with moviemaker Guillermo del Toro.