Two years ago, Rachel Harper's life was shattered when her younger sister, Lily, vanished without a trace. No clues, no ransom note, and no suspects-just an empty room and a town full of unanswered questions. Since then, Rachel has been consumed with grief and guilt, unable to move forward, always haunted by the memory of Lily's smile and the fear that she could have prevented it all.

But when Rachel stumbles upon an old, mysterious photograph of Lily taken just days before her disappearance-one Rachel has never seen before-the cracks in the case begin to form. The photo reveals a hidden detail: a man standing in the background, someone Rachel doesn't recognize. Desperate for answers, Rachel starts digging deeper into the past, uncovering secrets and lies that people in her small town have buried for years.

As she uncovers connections between Lily's disappearance and a series of cold cases stretching back decades, Rachel begins to question everyone around her. Who can she trust? Is the person behind Lily's abduction someone close to her, or has her sister's disappearance been part of something much darker?

Haunted by the past and pursued by dangerous forces, Rachel must confront her deepest fears-and the shocking truth that someone is willing to do anything to keep the secrets of yesterday from coming to light.

Yesterday is a pulse-pounding thriller about obsession, deception, and the lengths one will go to uncover the truth, even when the cost is too high to imagine. In a world where nothing is what it seems, Rachel must confront the terrifying possibility that what she thought she knew about Lily-and herself-was all a lie.