Despite being nine months into a zombie apocalypse, life had taken a fortunate turn for Mike Robson and Natalie Barzagan. Not only had they retrieved the vaccine for the Revenant Virus from the underground military facility at Site R, but they also found love with each other. That optimism is short-lived. When the group returns to its camp in southern Maine, a rape gang has destroyed the compound, murdered their friends, and kidnapped one of the young women. Robson makes the fateful decision to split his group. As he organizes a desperate attempt to rescue their friend, Natalie leads her Angels through a rotter-infested nation to bring the vaccine to the government-in-exile in Omaha. Both groups soon discover everything that has happened up to now cannot compare with the horrors they are about to encounter. "With Rotter World, Scott M. Baker pulls out all the stops in a zombie thriller that is brutal, violent and terrifying. Definitely not for the faint-hearted."-New York Times bestseller Jonathan Maberry, author of Patient Zero