Secret Sister

Sarah A. Denzil delivers another unsettling and emotionally layered psychological thriller that plays expertly with memory, identity, and the stories we tell ourselves to survive. Set against the bleak beauty of the Yorkshire moors, this Audible Original is as much an exploration of fractured family histories as it is a chilling mystery about what happens when your own mind becomes an unreliable narrator.

Narrated by Jessica Gunning and Joanne Froggatt, the audiobook deepens the sense of unease, pulling listeners into a story where certainty is slippery and the truth may be far more dangerous than forgetting.

Premise

• Celebrated author Faye Mathis is facing early-onset dementia and begins writing her memoir before her memories disappear.

• Her family history is fragmented and troubling, filled with unanswered questions and severed bloodlines.

• When a viral photograph shows a dirty, disoriented woman wandering the Yorkshire moors — a woman who looks exactly like Faye — her carefully ordered life begins to unravel.

• Faye is certain she is not the woman in the photo, but her failing memory makes certainty impossible.

• Determined to uncover the truth, Faye investigates the woman’s identity, only to uncover secrets that threaten everything she believes about herself and her family.

What Works

• An unreliable narrator done brilliantly: Faye’s dementia adds genuine tension and emotional weight, making every revelation feel precarious and earned.

• Atmospheric setting: The Yorkshire moors provide a haunting, isolating backdrop that mirrors Faye’s psychological descent.

• Sharp exploration of identity and memory: The story asks unsettling questions about who we are without our memories — and who controls the narratives of our lives.

• Escalating psychological tension: Each answer raises deeper, darker questions, keeping the suspense tight and compelling.

• Standout narration: Jessica Gunning and Joanne Froggatt bring nuance and intensity to the story, heightening both the emotional stakes and the creeping sense of dread.

A tense, unsettling listen that lingers long after it ends, this is domestic noir at its most introspective and disturbing — perfect for listeners who enjoy psychological thrillers that challenge perception and dig deep into family secrets.

Content Warnings: Physical abuse, Murder, Mental illness