The only evidence to the disappearance is a Bible found in her car with the word Wormwood highlighted under Revelation. Frank and Rob are pulled deeper into the disturbing investigation involving Bible prophecy, doomsday cults, and murder. They discover other kidnapped victims, men with strange full back tattoos, and evidence of a dark prophet called Brother John. During their quest, an old ghost resurrects herself, forcing Frank to deal with his religious doubts and a long-kept secret he's shared with no one. The trail leads to an old antebellum mansion in the deep woods of rural East Texas. It's not until then that the full horror of the case becomes apparent.