“The Eternal Footman” completes Morrow’s darkly comic trilogy about God’s untimely demise. With God’s skull in orbit, competing with the moon, a plague of “death awareness” spreads across the Western hemisphere. As the United States sinks into apocalypse, two people fight to preserve life and sanity. One is Nora Burkhart, a schoolteacher who will stop at nothing to save her only son, Kevin. The other is the genius sculptor Gerard Korty, who struggles to create a masterwork that will heal the metaphysical wounds of the age.