My Sister, My Love by Joyce Carol Oates

In a small college town, a young man becomes dangerously obsessed with his alluring stepsister, and their secretive, transgressive attachment sets off a chain of jealousy, betrayal and a violent incident that shatters their family; the aftermath becomes a public spectacle of suspicion, moral ambiguity and legal reckoning as neighbors, police and the press piece together the tangled loyalties and consequences of an illicit passion.

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