A Satanic scion hunts demons and spirits manifesting in our world by virtue of his own diabolical blood. He's monitored by a global organization tied to the Church to keep this demonic activity under wraps. It's a short leash; there's little tolerance for this demon-blooded misbehaving and going rogue means going dead. I'm looking for his partner-- maybe someone else in the organization or his handler. Maybe they've got faith-based powers (don't need to be Judeo-Christian). Maybe super technology. Maybe they're a vampire. I'm interested in something in-between The Exorcist and Hellblazer/Constantine in style, something dark and spooky without going full urban fantasy. Possessions, poltergeists, bloody rituals, killing sprees, demonic apparitions? Yes please!