A promo for "Constantine" has been airing on Canadian network Global TV, and among the glimpses of the threats John Constantine (Matt Ryan) will face this fall, fans of the Vertigo/DC Comics series "Hellblazer" are treated to some familiar faces, including Chas and the helmet of Dr. Fate.

The series was picked up by NBC in the States, where it will air Fridays at 10PM. The series' debut is slated for a week before Halloweeen, on October 24.

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Executive produced by David S. Goyer ("Man of Steel," "The Dark Knight Rises") and Daniel Cerone ("Dexter," "The Mentalist"), the series also stars Harold Perrineau ("Lost") as the "authoritative angel" Manny, and Charles Halford ("True Detective") as Constantine's good friend Chas.