Lot's Wife
The writer of this screenplay must have liked the biblical story of Lot's wife, who was turned into a pillar of salt for looking back as God destroyed Sodom. The story always seemed cruel to me, Lot's wife was punished for looking back and Lot and his two daughters escaped to the next town. Later the two daughters got Lot drunk and had sex with him. They both had babies by their own father and lived happily as far as we know.
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