Devil Coming. The Scarlet Jane Files, #5

An evil will rise in the south. However, with no way to determine what will emerge, or when, I return to the Agency with one goal in mind: to make right the wrongs that have been committed in my name. While a life-changing moment will secure me for the future, my present is mired with landmines, including some I do not wish to face. Including the haunting revelation that something has killed five hunters in the jungles of the Yucatan Peninsula.
Faced with impossible odds, I will be forced to confront my greatest foe yet-a foe who has slumbered for a thousand years, and who has awoken to change the Supernatural world.