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Nightmare Fuel: Children of the Corn
The end of the short story. Burt and Vicky do not survive, there are no good kids, and the cult is not stopped. The fact that one of the cultists is pregnant with Malachi's child was somehow the most disturbing thing about these lunatics.
Made only slightly less horrific by the fact that in the short story, Burt and Vicky are complete assholes.