A forgotten woman... 1951. Esther Durrant, a young mother, is committed to an isolated mental asylum by her husband. Run by a pioneering psychiatrist, the hospital is at first Esther's prison but soon becomes her refuge. A cache of unsent love letters... 2017. When free-spirited marine scientist Rachel Parker is forced to take shelter on a far-flung island off the Cornish Coast during a research posting, she discovers a collection of hidden love letters. Captivated by their passion and tenderness, Rachel is determined to find the intended recipient. A dangerous secret... Meanwhile, in London, Eve is helping her grandmother, a renowned mountaineer, write her memoirs. When she is contacted by Rachel, it sets in motion a chain of events that threatens to reveal secrets kept buried for more than sixty years. This beautifully haunting and atmospheric novel, will sweep fans of Kate Morton, Elizabeth Gilbert and Emily Gunnis away.