Archaeologist Dr. Abraham Stroud has faced off against vampire colonies, werewolf packs, and zombie hordes in previous digs. Stroud now faces the worst monsters in his adventures -- The SubterraneanS: creatures straight out of the earth, cemeteries to be exact. They are expanding and are the root cause of sinkholes. They tire of feeding on carrion in cemeteries and now seek fresh, tender, warm flesh.Against this diabolical diet, Abraham Stroud races to galvanize forces against his deadiest (and most stomache-churning) menace to date -- a malevolent force rising from the earth to lick it clean of living creatures.