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A blizzard brings a city to a standstill and ushers in an evil that defies imagination in this gripping tale from #1 New York Times bestselling author Dean Koontz.

Winter gripped the city. Terror gripped it, too. They found four corpses in four days, each more hideous than the last.

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.