is a four-part zombie novel, in which military and health organizations around the world battle time and the undead in an attempt to get valuable research data to the US Army Medical Research Institute of Infectious Diseases at Fort Detrick, Maryland. There, an antiretroviral for the Acute Reanimation Syndrome (ARS) virus is being developed. The novel has main characters from each region, two of which are half-zombies, and all the stories are intertwined with one another.