Death Springs Eternal — Robert J. Duperre

The sun rises from its slumber, melting away the winter's snow and bathing the barren land with light. The survivors once more begin their journey, braving the hordes of wandering undead, heading south for what they hope will be safer shores. But an old threat has risen from the bowels of humanity, standing in the way of any hope for salvation. As those who remain soon learn, in a world of chaos, zombies are the least of their worries.