Strange days.... Winter gripped the city. Terror gripped it, too. They found four corpses in four days, each more hideous than the last. Strange nights.... At first the cops thought they were dealing with a psychopath. But soon they heard eerie sounds in the ventilation system - and saw unearthly silver eyes in the snow-slashed night. Final hours.... In a city paralyzed by a blizzard, something watches, something stalks.