The Echo Sister

She thought she knew the shape of her life. She was wrong. Two years after Iris vanished, she comes back to Blackwood Manor as if nothing happened. At first, Elara is flooded with relief-but the reunion curdles quickly. Iris hums a lullaby only Elara remembers. She reaches with the wrong hand. She speaks of a third sister-Lily-who no one else can place. Small inconsistencies become impossible truths: doctored photos, a hidden child's bedroom behind a bookshelf, and a diary that proves the family kept a dangerous secret.
Elara's search for answers peels back the layers of their childhood and exposes a pact that was never meant to be spoken aloud. As the house answers in creaks and whispers and the mirrors show smiles that are not her own, Elara must face the terrifying possibility that the monster in the manor is not a stranger at all-but a piece of herself. The Echo Sister is a gothic psychological thriller that blends slow-burn dread with keen emotional insight.
If you love haunted houses that feel alive, twin dynamics that cut to the bone, and endings that linger long after the last page, this novel will keep you turning-and looking over your shoulder.