Ingrid Coleman's narrative unfolds through unsent letters hidden within her husband's vast book collection, revealing the depths of a once-passionate marriage now plagued by secrets and lies. Her sudden disappearance leaves a void on a Dorset beach and sends ripples through her family's lives. Twelve years later, her daughter Flora, grappling with the belief that her mother still lives, returns home to care for her ailing father. Amidst the tangle of memories and whispers of infidelity, the truth about Ingrid's fate is lost in a labyrinth of deception. Flora's quest for answers becomes a perilous journey through the pages of the past, where revelations lie buried in the margins of a troubled love and a life seemingly gone with the tide.