Warren Ellis' Blackgas 2 #2

A small island off the East Coast of America sits on its own tiny fault atop the underlying tectonic plate. It has an unusual history that almost everyone has ignored... until the night of the great storm, the crack in the fault line, and the release of something vile from the bowels of the earth, swept across the town of Smoky Island. Now, the only two individuals on the island who were beyond its influence are stranded on a dark sliver of rock with a population that's no longer human—they began to devour each other an hour ago!