In the fourth book of the V Plague series, an old enemy rises, uncovering plots within plots as the survivors battle to reach safety and find the missing. Those infected from the virus are getting smarter and deadlier. As the globe is constantly on the crumble, some are lost while new dangers appear at every convert. In the most sweeping tale up to now in the Voodoo Plague series, Crimson Hammer ratchets in the danger and intensity.