Constantine premiere
Matt Ryan as John Constantine in NBC's new showNBC

NBC's DC-adaptation Constantine is set to premiere its pilot episode on October 24.

The premiere episode is titled Non Est Asylum, and the official synopsis reads:

John Constantine Takes On A Rising Darkness As He Fights To Reclaim His Soul - Jeremy Davies And Lucy Griffiths Guest Star - Based on the wildly popular comic book series "Hellblazer" from DC Comics, seasoned demon hunter and master of the occult John Constantine (Matt Ryan) is armed with a ferocious knowledge of the dark arts and a wickedly naughty wit. He fights the good fight - or at least he did. With his soul already damned to hell, he's decided to abandon his campaign against evil until a series of events thrusts him back into the fray when an old friend's daughter (guest star Lucy Griffiths) becomes the target of supernatural forces.

An extended behind-the-scenes look at NBC's TV series Constantine, starring Matt Ryan as DC Comics' 'occult detective', has been released.

The cast also includes Angélica Celaya ("Dallas") as Zed, Harold Perrineau ("Lost") as Manny and Charles Halford ("True Detective") as Chas.

Here are a few promotional photos released by NBC

Constantine premiere
NBC
Constantine premiere
NBC
Constantine premiere
NBC
Constantine premiere
NBC
Constantine premiere
NBC
Constantine premiere
NBC
Constantine premiere
NBC