When there's no more room in hell, the dead will walk the earth.
During an ever-growing epidemic of zombies that have risen from the dead, two Philadelphia SWAT team members, a traffic reporter, and his television-executive girlfriend seek refuge in a secluded shopping mall.
This is one of the finest sequels ever, in that it's both of comparable quality with the original, yet is fundamentally different from it at the same time. Marvelous stuff, with aspects copied thousands of times over the past two generations, with no end in sight.
This and 'Salo, or the 120 Days of Sodom', from about the same time frame, would make one of the best double-bills ever on the evils of consumerism gone rampant...