A Visit After Dark — Daoma Winston

Recovered from her breakdown, Mary Tanner Layton was returning eagerly to the small, dusty, sun-baked town and her marriage that had scarcely begun. The grief and confusion were gone; she and Peter would pick up the pieces.

But Peter was living with his wife, a woman who looked like Mary. A woman who was Mary Tanner Layton! And only the terrified girl barely hanging on to her sanity said she was not. Who was this woman with her face and her name? Why was Peter making her life a nightmare from which nobody would let her wake up, a nightmare he'd go to any lengths to make permanent?