Laboratory director Jason Waters managed to survive the brutal attack by Tessa Taylor that left him crippled. One year later, he wants answers—and revenge. But an ill-fated trip back to that haunted Savannah house leads Jason to a terrifying conclusion—that there is evil within those walls, waiting for the next victim—and he has just walked into its trap. Now Jason finds himself in a fight for his sanity, his soul, and his city. Terrifying visions seduce him into sickness and hospitals are overrun with victims of a new, horrifying plague. And the only person who can stop the outbreak from spreading like wildfire—is the one who may have caused it.