Secret Sister

Secret Sister by Sarah A. Denzil is out now since April 7, 2026.

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Secret Sister

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Secret Sister Release Date: April 7, 2026

Published

What if the person haunting you… had your face?

Faye Mathis has spent her life writing bestselling novels about identical twins who solve crimes together. But after she’s diagnosed with early-onset dementia, her world begins to blur around the edges.

Then a shocking photograph goes viral.

It shows Faye wandering half-naked through the streets in the early hours. Her daughter insists it’s her. Faye is certain it isn’t. But how do you prove your innocence when you can’t trust your own memory?

As disturbing coincidences mount—a woman claims to have seen her on the moors, her doors are found unlocked, and someone seems to be watching the house—Faye begins to wonder if she’s losing her mind or if someone is deliberately driving her mad.

When she uncovers a devastating secret about her past that shatters everything she thought she knew about herself, Faye must confront the terrifying possibility that the stranger haunting her might not be a stranger at all.

Perfect for fans of Freida McFadden, Shari Lapena, and Lisa Jewell, Secret Sister is a chilling psychological thriller about identity and ruthless obsession.

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Genre: Thriller

Sarah A. Denzil

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