The American Southwest has been destroyed, ravaged by violence and infection. In order to stop the chaos from spreading, Sam and Delta must journey to Salt Lake City, to the heart of where it all began... Can the survivors alter the course of history, or has humanity's fate already been sealed? ALSO AVAILABLE IN THE SERIES: CONTAMINATION PREQUEL - FREE CONTAMINATION 1: THE ONSET CONTAMINATION 2: CROSSROADS CONTAMINATION 3: WASTELAND CONTAMINATION 4: ESCAPE CONTAMINATION 5: SURVIVAL CONTAMINATION 6: SANCTUARY CONTAMINATION: DEAD INSTINCT