Only Daughter by Anna Snoekstra

In this gripping psychological thriller, a young woman assumes the identity of a missing girl to escape her troubled past, only to find herself entangled in a web of secrets and lies. As she steps into the life of the vanished Rebecca Winter, she discovers that the seemingly perfect family she has joined harbors dark secrets, and the truth about Rebecca's disappearance is more sinister than she could have imagined. With tension mounting and danger closing in, she must unravel the mystery before her own identity is exposed, leading to a shocking and unexpected climax.

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