'THE WALKING DEAD AND HELL ON WHEELS COLLIDE ' September, 1868...SOMEWHERE IN THE SIERRA NEVADA, during the expansion of the Central Pacific Railroad, Nina Weaver and her pa, Lincoln, trundle into Coburn Station with a wagonful of goods they're looking to barter. Of all the rotten luck, their world-and the future of the American West-is forever changed when a sudden swarm of zombies invades town on the hunt for some human-sized vittles. THOSE POOR,...