Incubus-detective Gus Pilot is back in a paranormal police procedural that pits mortals and supernaturals alike against the Arbiter. When body gases escaping from a corpse start killing people Pilot is put on a timetable that pits him against wise guys, vampires, the FBI and a bodiless sylph. Side-stepping the Secret Service and a Presidential appointee he's supposed to be guarding, he must stop a plague and keep his friends from suspecting supernatural interference. But time is running out...