A pastor and a teacher, two pillars of the small community of Triune, share a dark and unspeakable secret: the common enemy of an ancient demonic terror deigns to destroy one through the other during the Devil's hour.

In the town of Triune, a dark and Unspeakable Secret... remembers. Percy Pullman is a successful author and pastor who has become the infatuation of a killer hell bent on terror. Meanwhile, Raymond Fisk, a young local teacher, exhibits signs of demonic possession that tempt him to brutally murder his entire family. Pullman must quickly confront this two front horror or be swept up in the event horizon of his own collapse.